PISTON KIT WOSSNER 76.97MM 14.4:1 YAMAHA WR250F 20-23 YZ250F 19-ON YZ250FX 20-ON Model_Brembo Prime A 12-point nut is simply

A 12-point nut is simply two hexagons overlaid at 30° to each other

beginning with the VForce3 we no longer use different "outer" and "inner" reed petals

Ease of Installation

Comes with magnetised keyring case

The Apex also records the longitudinal G force up to +- 1

PISTON KIT WOSSNER 76.97MM 14.4:1 YAMAHA WR250F 20-23 YZ250F 19-ON YZ250FX 20-ON Model_Brembo Prime A 12-point nut is simplyWossner pistons are all forged and supplied with the appropriate piston rings, piston pin and clips. Made in Germany. 76. 97MM Must use OEM Ring Set not supplied High compression, race only This piston requires careful installation and strict adherence to all critical V P and squish measurements. Additionally, the 3504D series piston requires use of OEM Yamaha rings.