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S&S Cycle 2007+ BT 3.927in +.010in Bore 106in Big Bore Forged Pistons
S&S Cycle
Special order
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Please be advised that no returns, cancellations, or refunds allowed on Special Orders once it has been placed on order regardless of the circumstances.
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Special order
Quantity:
Please be advised that no returns, cancellations, or refunds allowed on Special Orders once it has been placed on order regardless of the circumstances.
Special order
Quantity:
Please be advised that no returns, cancellations, or refunds allowed on Special Orders once it has been placed on order regardless of the circumstances.
These big bore pistons work with the stock 4-3/8" stroke flywheels to convert any 2007-'16 HD® big twin engine from 96" or 103" to 106" displacement with 10:1 compression with stock heads. Stock cylinders may be bored to accomodate larger pistons, but we recommend S&S 3.927" bore cylinders which feature high strength alloyed cast iron liners. Pistons are compatible with stock rods with tapered wristpin ends. S&S® 3.927" bore pistons are machined to such close tolerances that it is not necessary to measure the piston. Just bore cylinders to nominal diameter +/- 0.0005" for correct clearance. Additionally, the low friction coating on the piston skirt makes taking measurements very difficult. 3.927" .010" bore.
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