MCS-915241 - Fits 99-06 88" Twin Cam with stock cylinders that have been bored to 3-7/8"; and equipped with 4-1/2" stroker flywheels. Gives 9.7:1CR with stock heads. The forged pistons have a flat top; weight is same as stock. 1.020" deck height. Also as replacement f

Fitment:
99-06 88" Twin Cam with 4-1/2" stroker flywheels; 99-06 TCA/B with 106" Hot Set-Up kit (NU)