Stempel/Piston KB Performance, 08-12 XR1200/ 04-10 Buell XB piston kit.

2.499,00 DKK

(KB294) 3-5/8" big bore piston set. Used with 3 5/8" big bore cylinders with 5.330" (stock) to 5.530" (+.200") length. Use with 4-1/4" stock stroke (88"), 4-1/2" (93"), 4-5/8" (96") to 4-3/4" (98") stroker flywheels. 10.0:1 CR. Piston weight 385gr. Piston pin weight 97gr. Head type: Dome / Dome -57cc. Compression height 1.285" / Bore 3.625" (3 5/8"). Stroke 4.250" to 4.750" (4-1/4" to 4-3/4"). Rod length 7.440" / Cyl. length 5.330" (Std) to 5.530" (+.200"). 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: Top compression ring will need additional clearance. See instructions. Note: 5.330" cylinders can be used with stock 4-1/4" stroke. Longer strokes require correct length longer cylinders or stroker plates to achieve the desired compression ratio. Note: In any and all applications the technician must be able to judge components for their suitability in combination with the other engine components, prior to installation.

Fits: > 48-84 B.T. with 3-5/8 big bore cylinders and strokes from 4-1/4" to 4-3/4" (88" to 98" engines)


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)