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Honda XR650R (2000-07) 4 Stroke (11:1 C/R) Wossner Forged Piston Kit  119.93 
Ex Tax of 20% 


Wössner are regarded by Europe’s leading motor sport engine builders as being the piston of choice when building an engine not only to perform, but to withstand the stresses and duress’s of competition life. Wössner pistons feature a unique PTFE coating on the skirts and a grade of 4032 Alloy (T6) which allows the engine builder to run a closer piston to bore tolerance then he might do on another make of piston. This helps remove the slapping noise during cold start, common place among engines running forged pistons due to larger then OE bore clearances. The crowns of the pistons are also polished to better resist detonation on a high performance engine. Polishing allows a more even spread of heat inside the chamber which will help prevent “hot spots” on piston crowns. Price includes all piston rings and gudgeon pins.




Technical information is sourced from Wossner's latest catalogue

Part Number 8718
Engine Type

XR650R - 644CC

(Will not fit XR650L)

OE Bore Size 99.94mm
Bore Sizes Available






Stroke 82.6mm
Wossner Comp. Ratio 11:1
OEM Comp. Ratio 10:1
Dome/Bowl Volume -1.2cc
Comp. Height 29mm


Available Options:
8718 Size Options:
100.94mm - 8718D100 
101.94mm - 8718D200 
99.94mm - 8718DA 
99.95mm - 8718DB 
99.96mm - 8718DC 
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