KB Performance, 88" to 95" big bore piston set. Std - 99-06 Twin Cam (NU) 968206 The 37-80 4-speed models use

The 37-80 4-speed models use the early style flat 'o-ring'

JOKER MACHINE ROUND BAR END SPIEGEL

Chrome handlebar of Seamless 4130 chromoly steel

without position light

Fits: > 36-57 B

KB Performance, 88" to 95" big bore piston set. Std - 99-06 Twin Cam (NU) 968206 The 37-80 4-speed models use88" to 95" big bore conversion. Used with stock heads and cylinders. By boring the stock cylinders from 3 3 4" to 3 7 8" big bore size engine capacity will increase from 88" to 95". High compression (pop up). 10. 5: 1 CR. Piston weight 437gr. Piston pin weight 97gr. Head type: Dome. Dome 11. 2cc Compression height 1. 270". Bore 3. 875" Stroke 4. 000". Rod length 7. 667" Cylinder length 4. 938". Comes with T6 heat treated 390 Hypereutectic cast pistons