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SP125 Limited |
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22 Walker Wood,
Baildon, Shipley, West Yorkshire, BD17 5BE, England |
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Telephone 01274 583231
steve@sp125racing.com
Mobile 07738 626165 |
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www.sp125racing.com |
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RS125 NEW ACCESSORIES, TUNING & PATTERN PARTS
2011 |
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Please 'Refresh' this page every
time you visit. |
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If it is slow to reload, you know then that
this page has been updated since your last visit. |
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LINE BORING STANDARD HONDA RS125
CRANKCASES |
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The Honda RS125 Crankcases are not
supplied by Honda as a matched pair and because of this, often the
crankcases are not in line. |
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Because of this, the crankshaft does
not run in line through the main bearings and the conn-rod is not straight
in line with the cylinder bore. |
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This leads to reduced engine
performance and reduced bearing and crankshaft life. |
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We
insert the crankcase main bearing housing, using HE30 Aluminium, then line
bore to be sure that the main bearings and crankshaft are perfectly
straight. |
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Also we machine straight and parallel
the top of the crankcase/cylinder face. |
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LINE BORE CHECK & SKIM TOP CYLINDER
FACE OF CRANKCASES |
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First stage of checking crankcases for alignment - If crankcases
found to be in line, then checking is complete. |
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£150.00 + VAT |
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LINE BORE CHECK & SKIM TOP CYLINDER
FACE OF CRANKCASES |
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INSERT MAIN BEARING HOUSINGS & LINE
BORE CRANKCASES - If crankcases found to be out of line |
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- Including fitting 2x GP Low
Friction Main Bearings. |
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£450.00 + VAT |
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INSERT CRANKSHAFT OIL SEAL HOUSING
WHEN LINE BORING CRANKCASES |
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Occasionally, if the crankcases are
badly out of line, it is also necessary to re-line the crankshaft oil seal
housing. |
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£40.00 + VAT per side |
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REPLACEMENT CARBURETTOR QUICK CHANGE
DRAIN BOLT |
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Quickly change main jets in
carburettor with this replacement drain bolt. |
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Release and tighten by hand - big time saver for jet
changes made in pit lane etc. |
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£30.00 + VAT |
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HRC GEAR POSITION SENSOR |
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HONDA RS125 HRC GEAR POSITION SENSOR |
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£97.50 + VAT |
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CARBURETTOR BORE MODIFICATION TO
39.5mm |
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Standard
carburettor bored to 39.5mm & Powerjet Nozzle modified to use 55 to 75
Powerjets |
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As used by our team bikes |
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£225.00 + VAT |
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A-KIT REED VALVE |
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HONDA RS125 A-KIT REED VALVE ASSY COMPLETE WITH A-KIT CARBON REED
PETALS |
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As used by our team bikes |
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£340.00 + VAT |
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A-KIT CARBON REEDS |
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HONDA RS125 A-KIT CARBON REED SET |
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£102.50 + VAT |
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REED SPLITTER |
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1995~2011 RS125 Reed Splitter - Fits Standard & Jha Reed
Valve Assy |
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Slots straight into the reed valve and
the Reeds then work independently of each other and reduces reed valve
turbulence. |
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Dyno
test have shown a gains throughout the power range, especially over-rev. |
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It is necessary to cut the rubber
'ears' off from the carb rubber. |
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£125.00 + VAT |
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Available for Honda RS125 1995/2009 &
Honda RS250
2001/2009 only |
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JET HOLDER PLATE |
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RS125 Honda Jet Holder Plate |
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£38.00 + VAT |
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VHM A-KIT 'DOMED TOP' PISTONS & 0.8mm
PISTON RINGS |
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New
VHM A-Kit Domed Top Piston with 0.8 mm Piston
Ring |
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This piston comes complete with 1x 0.8 mm piston ring,
1x piston pin & 2x clips |
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£159.50 + VAT |
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Designed specially for Honda RS125 and RS250
and used with standard Honda Small End Bearing 91101-NX5-023 |
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Please note:
The
VHM A-Kit 'Domed Top' piston has been designed as a direct replacement for
the discontinued HRC A-Kit 'Domed Top' Piston. |
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The piston is manufactured by Vertex. |
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There are many other different pistons
manufactured by Vertex, mostly for Road or MotoX use. |
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But this is the only 'Domed Top' A-Kit Piston
that we recommend for use in Honda RS125 or RS250. |
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Do not use other 0.80 mm piston ring or other piston pin or other clips with VHM pistons! |
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Please note:
Production of the 'domed top' Honda / HRC A-Kit
Pistons has now finished |
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Honda
/ HRC RC do not plan to make any more of these 'domed top' pistons and stock is
now sold out. |
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VHM 'FLAT TOP' PISTONS & 0.7mm
PISTON RINGS |
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The VHM pistons have
been proven on various GP bikes and with good results. |
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These pistons weigh
less than the standard pistons, which will improve engine over rev
characteristics and give better throttle response. |
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The surface of
the piston has a special roughness for better oiling, which will help to
prevent premature seizure and damage. |
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New
VHM flat top piston with 0.70 mm low
friction piston
ring |
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This piston comes complete with 1x 0.7 mm low
friction
piston ring + 2x clips |
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Must be used with special 41mm short piston
pin - sold separately. |
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Designed specially for Honda RS125 and RS250
and used with standard Honda Small End Bearing 91101-NX5-023 |
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Piston
weight 117g |
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£139.50 + VAT |
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New
VHM Special 41mm Piston Pin |
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Piston
pin weight 28.2g |
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£16.50 + VAT |
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New
VHM Special
0.7mm low
friction Piston
Ring |
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Piston
ring weight 2.0g |
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£21.00 + VAT |
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New
VHM Special Piston Circlip |
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£0.70 + VAT |
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Please note:
The
VHM 'Flat Top' piston has been designed as a direct replacement for the
discontinued Honda / HRC 'Flat Top' Piston. |
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The piston is manufactured by Vertex. |
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There are many other different pistons
manufactured by Vertex, mostly for Road or MotoX use. |
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But only the pistons having the VHM logo
cast
inside the piston skirt are designed and recommended for use in Honda RS125 or RS250. |
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Do not use other make of 0.70 mm piston ring or other piston pin or other clips with VHM pistons! |
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HRC 'FLAT TOP' PISTONS & 0.7mm PISTON
RINGS |
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HRC Flat Top Piston -
Sold Out - Sales Finished |
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HRC 0.7mm Flat Top Piston Ring |
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£25.00 + VAT |
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Please
note:
The HRC 'Flat Top' Piston is now discontinued and sales finished by Honda.
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Honda / HRC do not plan to make any further 'Flat Top' Pistons. |
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Only the 0.7mm Piston Ring is still available to buy. |
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VHM 2 PIECE KIT CYLINDER HEADS |
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VHM UNIQUE PERFORMANCE ENHANCING STANDARD 2-PIECE CYLINDER HEAD DESIGN
(Standard 5-Stud) |
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£225.00 + VAT |
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VHM UNIQUE PERFORMANCE ENHANCING A-KIT 2-PIECE CYLINDER HEAD DESIGN
(A-Kit 6 Stud)
2007 spec |
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£225.00 + VAT |
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STD
A-KIT |
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VHM INDIVIDUAL HEAD INSERT (11.20cc / 11.40cc / 11.60cc)
£49.50 + VAT |
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VHM INDIVIDUAL BLANK HEAD INSERT
£37.50 + VAT |
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VHM INDIVIDUAL SPECIAL MADE HEAD INSERT (All Head Volumes Available for
Leaded & Unleaded Fuel)
£70.00 + VAT |
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VHM INDIVIDUAL SPECIAL MADE HEAD INSERT FOR 'FLAT-TOP'
PISTON (Available for Leaded & Unleaded Fuel)
£70.00 + VAT |
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VHM INDIVIDUAL SPECIAL MADE HEAD INSERT FOR
JHA KIT (Available for Leaded & Unleaded Fuel)
£70.00 + VAT |
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VHM INDIVIDUAL SPECIAL MADE HEAD INSERT FOR
SEEL KIT (Available for Leaded & Unleaded Fuel)
£70.00 + VAT |
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 'FLAT-TOP'
VHM INSERT |
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VHM SQUISH, COMPRESSION & VOLUME MEASUREMENT TOOLS |
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VHM PISTON PROJECTION / SQUISH SETTING TOOL |
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£102.50 + VAT |
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An absolute 'must have' to achieve accurate squish, volume and
port timing -
go to VHM Tool Information |
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VHM PIPETTE / BURETTE (with adjuster for fine measurement) |
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£56.00 + VAT |
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*** NEW
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NEW 2011 VHM CRANKSHAFTS |
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After the successful crankshaft
AK20005(T), AK20015T and AK20017T, VHM have developed new models for 2010. |
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The crankshafts ware be available for
the standard Honda RS125 and for the Honda RS125 A-kit.
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The standard RS125 crankshaft will fit
the standard crankcase, so there are no crankcase modifications needed. |
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The Honda RS125 A-kit crankshaft fits
only on a Honda A-kit crankcase after modifications specified by VHM.
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There are 3 models for the standard
crankcase and 1 model for the A-kit crankcase.
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The difference of the models of the
crankshafts is the inertia and weight. |
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With the 3 type's of inertia, you can
change the characteristics of the motor for each track. |
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Crankcase
Model Part Number
Description
Type |
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Standard Crankcase
1
AK20109
RS125 crankshaft with Standard ignition
Light weight Inertia |
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The crankshaft
with a lower inertia reacts faster, which will increase the acceleration of
the bike.
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On short and slow
racetracks, we advise to use the crankshaft with a lower inertia. |
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£1,595.00 + VAT |
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Standard Crankcase
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AK20107A
RS125 crankshaft with Standard ignition
Middle
weight Inertia |
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£1,595.00 + VAT |
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Standard Crankcase
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AK20107B
RS125 crankshaft with Standard ignition
Heavy
weight Inertia |
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Model 3 with the
highest inertia reacts slower on the gas throttle when turning out of the
corner. |
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The great
advantage is that the rider can open the gas throttle earlier. |
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The risk of
spinning of the rear wheel will be a lot smaller. |
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Another advantage
of the higher inertia is that the top speed will increase due to the
increased and improved over-revolution characteristic. |
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This crankshaft
is heavier then the standard Honda crankshaft, but the crankshaft is
designed so that the inertia |
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has increased
relatively more then the mass of the crankshaft.
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£1,675.00 + VAT |
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A-Kit Crankcase
4
AK20018
RS125 crankshaft A-kit
Light weight Inertia |
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£1,695.00 + VAT |
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All VHM crankshaft has began a heat
treatment and has been CNC grinded to precise dimensions. |
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The advantage of the heat treatment is
that the crankshaft in totally will be a lot stiffer, because the resistance
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against bending of the crankshaft is
much bigger. |
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This results in a much longer
performance and the crankshaft can also be overhauled many times.
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To obtain maximum performance, the
service limit for the VHM crankshaft is 1200 km running. |
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VHM can rebuild the crankshaft. |
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The crankshaft will be disassembled and
the connecting rod, big end pin, needle bearing and side washers will be
replaced. |
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After assembly, the crankshaft will be
aligned with high accuracy.
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VHM CRANKSHAFT
REBUILD SET |
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*** NEW
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CRK07 Crankshaft Rebuild Kit : for
VHM crankshafts AK20015T, AK20017T, AK20109, AK20107A, AK20107B |
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The connecting rod kit consist of
a billet VHM connecting rod, Ø24x54.9
big end pin, needle bearing and side washers. (Fits the Honda RS125
crankshaft) |
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£330.00 + VAT |
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AK20015T, AK20017T, AK20109, AK20107A, AK20107B |
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CRK01 Crankshaft Rebuild Kit : for
VHM crankshaft AK20005(T) |
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The connecting rod kit consist of a
connecting rod, Ø22x53 big end pin, needle bearing and side washers. |
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£165.00 + VAT |
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 27.9 Inertia AK20005(T) |
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CRK03 Crankshaft Rebuild Kit : for
standard Honda RS125 crankshaft 13300-NX4-711 |
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The connecting rod kit consist of a
connecting rod, Ø24x54.9 big end pin, needle bearing and side washers. |
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£385.00 + VAT |
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 24.2 Inertia Standard
Crankshaft 13300-NX4-711 |
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VHM CRANKSHAFT REBUILDING CHARGE |
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£85.00 + VAT |
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VHM RETURN CRANKSHAFT SHIPMENT TO UK |
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£38.00 + VAT |
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FACTORY SAND CAST KIT CYLINDERS |
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1998~2011 FACTORY SAND CAST A-KIT CYLINDER |
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£1,450.00 + VAT |
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BASE GASKETS |
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1998~2011
0.25mm BASE GASKET
£2.40 + VAT |
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1998~2011
0.75mm BASE GASKET
£2.65 + VAT |
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CYLINDER REPLATING & REPAIRS |
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RACING NIKASIL CYLINDER REPLATING - Coating to the
highest standard - Includes Ports Dressing & Exhaust Bridge Relief £150.00 + VAT |
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RACING PORTS DRESSING & EXHAUST BRIDGE RELIEF £40.00 + VAT |
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RACING ALUMINIUM WELDING CYLINDER REPAIRS - crack
repairs, detonation damage etc From £40.00 + VAT |
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RACING DETONATION RING INSERT - Insert & Repair
Detonation damage to cylinder £75.00 + VAT |
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LOW FRICTION CRANKSHAFT MAIN BEARINGS |
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1995~2011
GP SPL LOW FRICTION CRANKSHAFT MAIN BEARINGS - Longer Life, High RPM Durability,
Low Friction |
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£40.00 + VAT each |
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When we first got these, the GP Team claimed that they made a full 1
bhp extra power ! |
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We run these for the full life of the crankshaft and replace at 1,200
miles (2,000 km) and they still look perfect. |
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ENGINE STANDS |
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1995~2011 ENGINE STAND - can be laid
flat also |
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£80.00 + VAT |
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CLUTCH BASKETS |
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1995~2011 TALON BILLET HARD NICKEL PLATED OUTER CLUTCH BASKET |
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Much stronger than the original cast clutch baskets |
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£99.00 + VAT |
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1995~2011 COUGAR RED BILLET OUTER CLUTCH BASKET - Weight
225g (without primary gear & rubbers) |
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£160.00 + VAT |
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- Improves clutch
performance and life
- Improves heat
dissipation
- Lightweight billet clutch basket, made from high grade aluminium
- Lighter and stiffer than the standard cast basket.
- Hard Anodised for improved wear resistance.
- Allows clutch assembly
to spin more true creating less heat when clutch is disengaged.
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1995~2011 COUGAR RED BILLET INNER CLUTCH HUB & PRESSURE PLATE &
6x LIGHTWEIGHT |
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HARD ANODISED ALUMINIUM CLUTCH PLATES - Weight complete 520g
(without friction plates) |
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£350.00 + VAT |
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ALUMINIUM CLUTCH PLATES |
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1995~2011 COUGAR RED LIGHTWEIGHT HARD ANODISED ALUMINIUM CLUTCH PLATE
- Weight each 18g |
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£17.50 + VAT each |
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1995~2011 HINSON REPLACEMENT CUSH DRIVE RUBBERS FOR
STANDARD/TALON/HINSON CLUTCH BASKET |
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£35.00 + VAT |
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DETONATION COUNTERS |
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HRC DETONATION COUNTER - With Data Logger Outlet - necessary to use with HRC
DataLogger & HRC/Jha Ignition |
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£900.00 + VAT |
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HRC DETONATION SENSOR - replacement HRC detonation sensor lead |
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£245.00 + VAT |
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Go To HRC Detonation Counter & DataLogger Page |
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DETONATION COUNTER |
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From £160.00 + VAT |
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Go To Detonation Counter Page |
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NGK SPARK PLUGS & CAPS |
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R6385-105P STANDARD SPARK PLUG £45.00 + VAT |
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R7282-105 (R6120-105) RS250 'short' SPARK PLUG
£45.00 + VAT |
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R7282-105A / R7282-11A (R6120A-105 / R6120A-11) DETONATION
COUNTER SPARK PLUG £45.00 + VAT |
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R7282-105/105A/11A SPARK PLUG CAP
£21.50 + VAT |
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IGNITION CURVE CHANGERS |
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1995~2008 RS125 16 Setting IGNITION CURVE CHANGER |
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- Simple to fit to Standard ignition,
boosting mid-range power and over rev. |
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£245.00 + VAT |
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Go To:
16 Setting
Ignition Curve Changer |
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Exports of all parts supplied to outside EC Countries are exempt from UK VAT |
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Exports to EC Countries are exempt from VAT if a valid VAT registration
number is supplied |
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Return To sp125racing.com Homepage |
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SP125 Limited
Disclaimer |
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Honda, HRC
and all other parts supplied by the SP125 Limited are not guaranteed when used in competition events. |
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As such, it is
a condition of our making all parts available that it is solely the decision
of each individual, rider, team member or team |
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whether they choose
to use any part supplied and in doing so, absolve the manufacturer and SP125
Limited of
any or all such
claims, |
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including
damage to equipment and/or injury to personnel irrespective of how caused. |
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All parts remain property of SP125 Limited until
paid for in full. |
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All 'special order'
parts, that are ordered specially under the instruction of the customer, are non
returnable and non refundable. |
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