5th. Overdrive Gear for Yamaha XS650(78-84), Main shaft 0.975mm ONLY

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5th. Overdrive Gear for Yamaha XS650(78-84), Main shaft 0.975 mm ONLY 0.979 inches or 24.82 mm (Hole diameter)24 Tooth 5th. Pinion Gear. Replaces 23T 5th. pinion gear (OEM Ref.#341-17151-04)Gear fits to stock location and makes fifth gear taller (higher top speed in fifth but less torque and less vibration) but ratios in lower gears remains the same so that acceleration & torque in lower 4 gears remains the same. Cases must be split to install. This is a "Race" part and carries no warranty other than for defects in materials.Fits: XS650's 1978 - 1984 Only! Note: Yamaha changed the shape of transmission gear teeth from 78 on and this is indicated by lines cut into the crest of each tooth.Note: The gear I.D. measures 0.979 inches or 24.82 mm, so the shaft must be slightly smaller to work. PLEASE CHECK BEFORE ORDERING. This is Highly recommended to be used with part #05-0857.

More Information
OEM Number 341-17151-04
Fitment 1978 Yamaha XS650
1978 Yamaha XS650S
1979 Yamaha XS650
1979 Yamaha XS650-2
1979 Yamaha XS650S
1980 Yamaha XS650 Special II
1980 Yamaha XS650S
1981 Yamaha XS650 Special II
1981 Yamaha XS650S
1982 Yamaha XS650S Heritage
1983 Yamaha XS650S Heritage Special
1984 Yamaha XS650S Heritage Special
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