Athena Ø98mm Cylinder-piston kitRef : ATH00634A / 1013514

ATHENA Ø98 Cylinder Kit for Yamaha YFZ450R

Designed by ATHENA, a global leader in thermal groups, this Ø98 cylinder kit is intended for quad preparations based on the YFZ450R. The cylinder-piston assembly allows for an increase in compression ratio and optimizes engine behavior in a competition or track setting, while maintaining the robustness expected from a thermal group developed for racing.

• Compatibility: Yamaha YFZ450R (notably 2017–2018 Special Edition and 2018 models)
• Diameter: Ø98 mm
• Contents: cylinder kit + Ø98 piston
• Benefits: lighter assembly than the original equipment, allows for a higher compression ratio and better engine responsiveness
• Usage: intended for performance optimization on track — reserved for track use
• Spare Parts: Segment 270022 – Piston 9460DA – Cylinder head gaskets 604453
• Manufacturer Reference: P400485100047

Before installation, ensure appropriate adjustments (engine management, carburation, timing) are made to fully benefit from the kit and maintain reliability. This thermal group is aimed at riders and preparers looking to enhance the response and effective range of the YFZ450R on the track.