sp125racing
Follow us at
  • sp125racing
  • Honda RS125
    • RS125 Genuine Honda HRC Parts
    • RS125 Engine Parts
    • VHM Piston Height Tool Guide
    • RS125 Chassis Parts
    • RS125 Honda Wheels Tyrewarmers Sprockets
    • RS125 Honda Crash Protectors
    • RS125 Honda Brembo Brakes
    • RS125 Honda Handlebars Levers & Footpegs
    • RS125 Honda Stands
    • RS125 Honda Quickshifters
    • Battle Shifter Fitting Instructions
    • RS125 Special Tools
    • RS125 Honda Fairings
    • RS125 Honda Seats
    • RS125 Honda Mudguards
    • HRC Datalogger & Detonation Counters
    • Detonation Detection System
    • Replacement for HRC Detonation Lead
    • RS125 16 Setting Ignition Curve Changer
    • RS125 Ignition Pulse Simulator
    • RS125 Throttle Position Sensor Checker
    • RS125 Gear Change Light
    • RS125 Powerjet Controller
    • RS125 Powervalve Controller Box
    • RS125 High Viz Temp Gauge
    • RS125 Ni-MH Battery Pack
    • RS125 Honda How To Order
  • HRC Setting Data & Maintenance Information
    • RS125R / RS250 Basic Concept of Power Jets
    • RS125 / RS250 Settings using Detonation Counters
    • RS125 / RS250 Settings according to seasonal conditions
    • RS125R / RS250R Functions of carburetor parts
    • RS250R Carburetor Settings
    • RS125R Parts Combination according to model years
    • RS250R Parts Combination according to model years
    • RS125R / RS250R Optimizing riding position
    • RS125R / RS250R Suspension Settings vol.1
    • RS250R Suspension Directionality
    • RS125R / RS250R Points of engine and frame assembly
    • RS125R / RS250R Notes on Engine Maintenance
    • RS125R / RS250R Notes on Frame Maintenance
    • RS125R / RS250R Conservation for engine power
    • RS125R / RS250R Running In / Warming Up / Position Adjustment
  • Honda RS250
    • RS250 Genuine Honda HRC Parts
    • RS250 Engine Parts
    • RS250 Chassis Parts
    • RS250 Handlebars, Levers & Footpegs
    • RS250 Brakes
    • RS250 Honda Stands
    • RS250 Honda Quickshifters
    • RS250 Bodywork
    • RS250 Bike Specification 2008
    • RS250 16 Setting Ignition Curve Changer
    • RS250 Ignition Pulse Simulator
    • RS250 Honda How To Order
  • Honda NSF250R
    • NSF250R Genuine Honda HRC Parts
    • NSF250R Engine Parts
    • NSF250R Honda Wheels Tyrewarmers Sprockets
    • NSF250R Honda Handlebars Levers & Footpegs
    • NSF250R Chassis Parts
    • NSF250R Honda Crash Protectors
    • NSF250R Honda Stands
    • NSF250R Honda Quickshifter
    • NSF250R Bodywork & Airbox Parts
    • NSF250R Honda How To Order
    • NSF250R High Viz Temp Gauge
  • Nova Gearbox - KTM Moto3
  • Terms and Conditions
  • Steve Patrickson Profile
  • Race Team Archives
    • 2023 sp125racing Team
    • 2022 sp125racing Team
    • 2021 sp125racing Team
    • 2020 sp125racing Team
    • 2019 sp125racing Team
    • 2018 sp125racing Team
    • 2017 sp125racing Team
    • 2016 sp125racing Team
    • 2015 sp125racing Team
    • 2014 sp125racing Team
    • 2013 sp125racing Team
    • 2012 sp125racing Team
    • 2011 sp125racing Team
    • 2010 sp125racing Team
    • 2009 sp125racing Team
    • 2008 sp125racing Team
    • 2007 sp125racing Team
    • 2006 sp125racing Team
    • 2005 sp125racing Team
    • 2004 sp125racing Team
    • 2003 sp125racing Team
    • 2002 sp125racing Team
    • Tom Carne Profile
    • Jordan Weaving Profile
    • Rob Guiver Profile
    • Brad Ray Profile
    • Chrissy Rouse Profile
    • Matt Davies Profile
    • Ben Barrett Profile
    • Matthew Hoyle Profile
    • Lee Costello Profile
    • Nicole McAleer Profile
    • Connor Behan Profile
    • Luke Hinton Profile
    • Jordan Malton Profile
    • Dan Moreton Profile
    • Michael Smith Profile
    • Luke Jones Profile
    • Jamie Ashby Profile
    • Mark Clayton Profile
    • Joel Marklund Profile
    • Elliot Lodge Profile
    • Elliot Lodge 2018 Profile
    • Elliot Lodge 2019 Profile
    • Harvey Claridge 2018 Profile
    • Harvey Claridge 2019 Profile
    • Franco Bourne 2019 Profile
    • Calum Beach 2019 Profile
    • Jeremy Knight 2019 Profile
    • Cameron Horsman 2019 Profile
  • Contact
  • 2022 Race Dates
  • 2023 Race Dates
  • 2024 Race Dates

HRC Setting Data & Maintenance Information


RS125R Parts Combination according to model years


Please  'Refresh' this page every time you visit.         If it is slow to reload, you know then that this page has been updated since your last visit.

Picture
Picture
If used machines are bought, previous owner’s specifications should be fully checked whether they are bought from private owners or retailers.
Since the RS racers have had improvements year by year, they are different in specifications depending on model years even if they have similar exterior appearance. Accordingly, before installing parts, manufacture years and parts combination according to years should be confirmed. Wrong combination would lead to degraded performance and failures.
Shown below are parts combinations according to manufacture year for the RS125R.

Parts combination for RS125R


 Parts name         Criteria                          '97                  '98                 '99                  '00                 '01
Cylinder               Cylinder stamp              Head No.6       Head No.7      Head No.8      Head No.9       Head No.0
Cylinder head       Plug seating surface      Plateau           Plateau          Plateau           Plateau           Recess
ECU                    Type No.                      CI662C            CI708             CI708              CI708             CI708B
Carburetor           Carburetor stamp                                 09A                09A                09D                09J
Criteria for each part
 1)  Cylinder
      Cylinders should be identified by the first digit of the 8-digit stamped numbers placed to the left when the exhaust side is faced forward. 

     Basically, manufacture year minus one (first digit).
 2) Cylinder head
     Photo below to the left shows a cylinder head with elevated plug-seating surfaces for 1997 through 2000 year model. 

     Photo below to the right shows a cylinder head with recessed plug-seating surface for the 2001 year model.
     Viewing from the combustion chamber side, plug-seating surfaces are opposite each other (2001 year model has elevated seating surface).
    Cylinder head with elevated plug-seating surfaces for 1997 through 2000 year model
    Cylinder head with recessed plug-seating surface for the 2001 year model.

Picture

'97 -'00 cylinder head with plateau shape spark plug-seating surface.

Picture

'01 cylinder head with con-caved spark plug seating-surface.
 

3) ECU 
  Can be identified by the model number [CI###] in white-letter on the upper right the body. 

4) Carburetor 

  Can be identified by stamp indicated by white lines on the photo.
Picture
Features of settings by year 

'97         
Unleaded gasoline was introduced for the first time. Adjust ignition timing to avoid rich feeling in summer and detonation in winter (Retarding ignition timing is effective against detonation)


'98-'99   
Pwj fitted carburetor was introduced for the first time. 
The Pwj became effective in preventing detonation (Pwj designed to prevent detonation). (Pwj of smaller #40 or #42 were used)


'00        
Like the 250, Pwj was used for carburetor settings. Larger Pwj#48 is cut after peak output power for smoother high revving (Pwj designed for setting)


'01        
Increased low-to-middle torque oriented engine characteristics, effective for rising at the corner. Pwj #48 with MJH#3.9, rich setting designed not to lose powerful middle speed range.


For users who bought used machines and want to improve potential performance, it is recommended that parts be replaced with parts of latest year model for more potential.

Parts for '01 RS125R


                  Crankcase   Crankshaft   Cylinder   Cylinder head   ECU   EX Chamber   Carburetor   Harness'
97 RS125R          *                -                *                 *               *              *                   *              *
'98 RS125R          -                -                -                 *               *              *                   *              -
'99 RS125R          -                -                -                 *               *              *                   *              - 
'00 RS125R          -                -                -                 *               *              *                   -              -

*  =  Can be used if all the related parts are replaced
-  =  Same specifications (can be used even if different in part number)

return to hrc setting information

return to honda rs125
home
SP125 Limited
22 Walker Wood,  Baildon,  Shipley,  West Yorkshire,  BD17 5BE,  England
Telephone 01274 583231      [email protected]      Mobile 07738 626165
Picture
SP125 Limited Disclaimer
Honda, HRC and all other parts supplied by the SP125 Limited are not guaranteed when used in competition events.
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 whether they choose to use any part supplied and in doing so, absolve the manufacturer and SP125 Limited of any or all 
such claims, including damage to equipment and/or injury to personnel irrespective of how caused.

All parts remain property of SP125 Limited until paid for in full.

All 'special order' parts, that are ordered specially under the instruction of the customer, are non returnable and non refundable.
Powered by Create your own unique website with customizable templates.