Trials Trail & Enduro Parts > 1. Yamaha TY Trials Parts > TY175 Parts > 4. Crank & Piston

12. Primary Seal Collar - TY125 & TY175 Twinshock
OEM Yamaha Part - The collar that sits inside the crank seal on the right hand side of the engine

New Primary Seal Collar
OEM Yamaha Part
Standard Equipment on the following models-
TY125 & TY175 Twinshock
All years & models
This is the collar that sits inside the crank oil seal on the right hand side of the engine, behind the primary gear.
This should be replaced occasionally because grooves can wear in the collar and let gearbox oil into the crankcase. We have also seen them rust under the chrome and wear the oil seal within hours. So inspect and if it looks dodgy replace
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