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S&S Cycle 84-99 BT 89in Stock Bore Stroker Kit
S&S Cycle
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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Please be advised that no returns, cancellations, or refunds allowed on Special Orders once it has been placed on order regardless of the circumstances.
Please be advised that no returns, cancellations, or refunds allowed on Special Orders once it has been placed on order regardless of the circumstances.
S&S 89" stock bore stroker kit upgrades carbureted 80" HD 80 Evolution Big Twin engines to 89" displacement at approximately 9.25:1 compression
- This kit requires special pistons which must be ordered separately depending on the oversize required for the stock cylinders
- Includes a dynamically balanced 4-5/8" stroke flywheel assembly complete with S&S heavy duty connecting rods and mainshafts
- Pistons are available for stock or S&S Performance Replacement cylinder heads or for S&S Super Stock cylinder heads
- Stock bore stroker kits reuse the stock cylinders, saving cost and retaining appearance of the engine
- Minor crankcase and cylinder modifications are required, that can easily be done with hand tools
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