KB Performance, XR1200/Buell XB piston kit. +.040"

Forged aluminum piston set for stock stroke and cylinders. 9.2:1 CR with 69cc, 10.1:1 CR with 62cc; 11:1 CR with 55cc and 11.6:1 CR with 51cc cylinder heads. Piston weight 360 gr. / Piston pin 97gr. Head type: Domed with -1cc. Compression height 1.210". Bore 3.498" / Stroke 3.812" / Rod length 6.926". Comes with T6 heat treated 390 Hypereutectic cast pistons with 16% silicone levels which enables running a very tight clearance for longevity and hardly any piston noise. Note: All KB forged pistons come equipped with offset wrist pins / piston pins. There is a front and rear section on the piston and it is necessary to install it in the correct way. Please refer to the installation instructions, as provided with each piston set, prior to installation.

Fits: > 08-12 XR1200; 08-10 Buell 1200 XB (NU)