Derbi GPR 125 Namura Piston Kit.
This is a Namura Piston Kit To Fit The Derbi GPR 125 Cylinder.
Piston kit contains piston, piston rings, gudgeon pin and 2 circlips.
The Engine Fitted To The Derbi GPR 125 Is A Yamaha DT125R Engine With A Std Bore Of 56.00mm. The Cylinder Is Fitted With A Cast iron Sleeve From The Factory And IS Re-boreable So Please Check Your Size Before Ordering The Piston.
You Can Go All The Way Up To 58.00mm But After Around 57.00mm The Cylinder Head Gasket And Cylinder Head May Need To Be Opened Out To Avoid The Piston Hitting Them.
Namura Pistons Are Made In Taiwan