S&S 107" 124" Big Bore Conversion Kit – Cylinder & Piston
S&S 107" 124" Big Bore Conversion Kit – Cylinder & Piston
574118
S&S 107" → 124" Big Bore Conversion Kit – Cylinder & Piston
Complete bolt-on kit of 2025 cc, designed for stock 107" M8 engines with 4.375" stroke. Converts the engine to 124" and includes black wrinkle cylinders with highlighted cooling fins and a forged 4.250" bore piston and ring kit with 1.143" deck height and -4.3 cc dish volume, giving 11:1 compression with the original cylinder head.
The kit comes with all necessary top and bottom gaskets and hardware, and provides a significant capacity increase without the need for case drilling, top work or flywheel rebalancing.
Complete bolt-on 124" conversion
Forged piston with 4.250" bore
Black wrinkle cylinders with highlighted cooling fins
Deck height: 1.143" / Dish volume: -4.3 cc
Compression: 11:1 with stock cylinder head
Includes all gaskets and hardware
Easy installation without case drilling or flywheel rebalancing
Note: Compatible with OEM head bolts, but S&S recommends their 576972 kit (14% stronger than stock) for all big bore installations.
Suitable for:
Harley-Davidson M8 107" Engines 2017-2024
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€2.054,95
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