S&S, 107" to 124" big bore conversion cylinder & piston kit - 17-23 107" M8 921302 is separately available as 537531

is separately available as 537531 for the next level in a subzero cool factor

071 (2) upper bolt and 073 (2) lower bolt and 0261 (6) spring washers

Will flush & back-flush injectors

Drag specialties apehanger van 25

Made from 9/16" round steel bar

S&S, 107" to 124" big bore conversion cylinder & piston kit - 17-23 107" M8 921302 is separately available as 537531Complete bolt on 2025cc kit. Compatible with stock 107" engines, which have the required 4. 375" stroke. Converts the 107" engine to 124". Incl. black wrinkle cylinders with highlighted fins and 4. 250" bore forged piston & ring kit with 1. 143 deck height and 4. 3 cc dish volume for an 11: 1 CR with stock cylinder head combustion chamber volume. Incl. all required head & base gaskets and hardware. Provides a massive increase in capacity with bolt on