.020" Oversize Piston Assembly for Briggs Raptor Engines - Supersedes 555481

Transform worn-out power with the .020" piston assembly (SKU 555675), superseding 555481 for modern Raptor flathead builds. Fully assembled with rings, pin, and circlips, it's ready to drop into your engine for immediate gains.

Oversizing to .020" compensates for bore wear, reinstating tight clearances that lock in compression. This means fuller combustion chambers, where fuel detonates more violently to thrust your kart ahead of rivals.

• Lightweight alloy forging balances strength with reduced reciprocating mass for quicker revs.
• Pre-gapped rings ensure out-of-box sealing, saving tune-up time.
• Hard-anodized skirt minimizes scuffing on cylinder walls during break-in.
• Engineered for 5-7 hp outputs in stock configurations, scalable for mods.

Picture the start line: your engine hums with renewed vigor, pulling harder from idle. This assembly shines in endurance events, where consistent displacement prevents fade. Mechanics favor it for its plug-and-play nature, cutting labor hours so teams can iterate setups rapidly.

Beyond performance, it promotes even heat distribution, curbing hot spots that lead to seizures. For series like IKF or WKA, compliance is assured with OEM-grade materials. Upgrading to this piston elevates drivability—smoother shifts, predictable power bands, and the confidence to push limits. It's the core of any competitive rebuild, turning potential into podium potential.

In dusty ovals or slick sprints, reliability reigns; this assembly delivers, lap after lap, fueling ambitions with every cycle.