S&S CYCLE Big Bore Cylinder Set - 4.250" - Wrinkle Black with Highlighted Fins - M8 910-0682 Tires 5:1 compression ratio

5:1 compression ratio

All passages between the crankcase cam support plate are O-ring sealed

883 models will require the use of XL1200 cylinder heads to achieve correct compression ratios

Easy installation

Valve contact tips are induction hardened for extended durability

S&S CYCLE Big Bore Cylinder Set - 4.250" - Wrinkle Black with Highlighted Fins - M8 910-0682 Tires 5:1 compression ratioBig Bore Cylinder Set 4. 250" Wrinkle Black with Highlighted Fins M8 Bolt on cylinder set, Bored slightly under nominal size and are not honed, Made in the USA, S&S recommends using S&S Cycle head bolts for all big bore appplications.