Wiseco Forged Turbo Pistons – 77.5mm | 8.5:1 CR – Mini Cooper S (2002–2005)
Fits: 1.6L Supercharged (R53) | High-Boost Turbo Builds
Take your forced-induction Mini build to the next level with Wiseco’s 77.5mm forged pistons, designed for the 2002–2005 Mini Cooper S with a 1.6L Tritec engine (R53 chassis). Built for high-boost turbo or supercharged applications, these pistons feature an 8.5:1 compression ratio, perfect for reliable power under pressure.
✅ Key Features:
Bore Size: 77.5mm (oversize – check block clearance)
Compression Ratio: 8.5:1 – ideal for turbo/supercharged setups
Application: 1.6L Supercharged I4 (Mini Cooper S R53)
Material: 2618 forged aluminum alloy – race-proven strength
Design: Lightweight, fully machined for max reliability and balance
Skirt Coating: Reduces friction and wear
Valve Reliefs: Compatible with OEM and aftermarket cams
Pin & Rings Included: Yes – complete set for all four cylinders
📦 Includes:
4 × Forged pistons (77.5mm)
4 × Wrist pins
Piston rings
Locks
