KB Performance, B.T. piston kit, 1200cc. +.040"

Compatible with stock cylinders and heads, maintains the original compression ratio. Compression ratio 8.5:1. Piston weight 370 gr. Piston pin weight 97 gr.
Head type: Dome 0.656" / Dome -57cc.
Compression height 1.450".
Bore 3.4375" / Stroke 3.969" (3-31/32").
Rod length 7.440" / Cylinder length 5.330".
Includes 390 aluminium hypereutectic cast pistons with T6 heat treatment and 16% silicon, allowing a very tight clearance for greater durability and virtually no piston noise.
Note: The top compression ring will require additional clearance. See instructions.


Specifications


Brand
KB Performance Piston


Application
41-78 74"/1200cc Knuckle, Pan, Shovel (NU)


Sales unit
Set


Material
Aluminium


Packaging weight
1.27 kg


HS Code
84099100


Motorcycle family
BIG TWIN, FX


Original name
KB Performance, 1200cc B.T. piston kit. +.040"