1997-2001 Honda CR250 Transmission & Internal Shift Mechanism Specifications

Transmission & Internal Shift Mechanism Specifications For Your 1997-2001 Honda CR250 Dirt Bike.

1997 -2001 Honda CR250 - Transmission And Internal Shift Mechanism Specifications - FeaturedIf you need parts and tools make sure to buy them here!

Related: ’97-’01 Honda CR250 Transmission Service

General Transmission Specifications:

Service Limit mm (in.)
Transmission5 – Speed Constant Mesh
Primary Reduction TypeGear
Ratio3 (63/21)
Final Reduction Ratio
– 19973.769 (49/13)
– 1998 – 20013.846 (50/13)
Gear Ratios
– First Gear1.800 (27/15)
– Second Gear1.470 (25/17)
– Third Gear1.210 (23/19)
– Fourth Gear1.000 (21/21)
– Fifth Gear0.869 (20/23)

 

Transmission Service Specifications:

New – mmService Limit – mm
Mainshaft Assembly
Mainshaft O.D. @ 5th Gear24.959 – 24.98024.94
4th Gear I.D.28.007 – 28.02828.05
4th Gear Bushing O.D.27.959 – 27.98027.94
4th Gear To Bushing Clearance0.027 – 0.069.11
5th Gear I.D.25.020 – 25.04125.07
5th Gear To Shaft Clearance0.040 – 0.0820.13
Countershaft Assembly
Countershaft
Countershaft O.D. @ 1st Gear Bushing18.959 – 18.98018.94
Countershaft O.D. @ 2nd Bushing24.959 – 24.97924.96
Countershaft O.D. @ 3rd Gear24.959 – 24.98024.94
1st Gear
1st Gear I.D.22.020 – 22.04122.07
1st Gear Bushing O.D.21.979 – 22.00027.95
1st Gear Bushing I.D.19.000 – 19.02119.04
1st Gear To Bushing Clearance0.020 – 0.0620.12
1st Gear Bushing To Shaft Clearance0.020 – 0.0620.12
2nd Gear
2nd Gear I.D. 30.020 – 30.04130.07
2nd Gear Bushing O.D.29.979 – 30.00029.95
2nd Gear Bushing I.D.27.000 – 27.02127.04
2nd Gear To Bushing Clearance0.020 – 0.0620.12
2nd Gear Bushing To Shaft Clearance0.020 – 0.0620.12
3rd Gear
3rd Gear I.D.25.020 – 25.04125.07
3rd Gear To Shaft Clearance0.041 – 0.0820.11
Internal Shift Mechanism
Shift Fork Shaft O.D.
Center Fork10.983 – 10.99410.97
Right & Left Forks11.966 – 11.98411.95
Shift Fork I.D.
Center Fork11.003 – 11.02411.04
Right & Left Forks12.035 – 12.05612.07
Shift Fork Claw Thickness4.93 – 5.04.8

 

Keep Your ’97-’01 CR250 Running Right!

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