Availability
Powersports Top End Engine Kits
2017+ M8 Models 129in Big-Bore Kit 4.375in Stroke Non-Highlighted Cylinders
Part Number: SSY-910-0844A
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
128" BIG BORE KIT M8 BLK
Part Number: SSY-910-0733
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 86-21 Sportster Models High Compression 1250cc Conversion Kit - Wrinkle Black
Part Number: SSY-910-0692
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
07-17 BT 117in Low Compression 4-1/8in Big Bore Kit - Silver
Part Number: SSY-910-0321
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
66-84 BT 80in 3-1/2in Bore Cylinder and Standard Compression Piston Kit
Part Number: SSY-91-9024
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
07-16 BT 124in Standard Compression 4-1/8in Big Bore Kit - Silver
Part Number: SSY-910-0341
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
2017+ M8 Models 132in/136in Big Bore Cylinder Kit +8.5cc Dome (Blk w/ Fins) - 4.320in Bore
Part Number: SSY-910-0909A
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 84-99 BT 96in 3 5/8in Sidewinder Big Bore Cylinder & Piston Kit - Wrinkle Black
Part Number: SSY-91-7702
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 2017+ M8 Models 4.320in Bore 4.500in Stroke Cylinder Kit - Black Granite w/ Highlight
Part Number: SSY-910-0847
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
07-16 BT 124in Low Compression 4-1/8in Big Bore Kit - Silver
Part Number: SSY-910-0327
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 00-21 Sportster Models 883cc to 1200cc Hooligan Kit - Wrinkle Black
Part Number: SSY-910-0699
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 2017+ M8 124in CI Oil Cooled Power Pack w Black Pushrod Tubes w/o Highlight
Part Number: SSY-310-1057B
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 2017+ M8 Models 129in Big-Bore Kit 4.375in Stroke Highlighted Cylinders
Part Number: SSY-910-0843
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 84-99 BT 4-1/8in Bore Cylinder Set w/ Pistons For 117in V-Series Engines - Natural
Part Number: SSY-910-0290
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 2017+ M8 Models 4.5in Stroke 132in Big Bore Kit
Part Number: SSY-910-0845
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 66-84 BT 80in 3-1/2in Bore Cylinder and High Compression Piston Kit
Part Number: SSY-91-9023
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 84-99 BT w/ Stock Heads 88in 3 5/8in Big Bore Cylinder & Piston Kit - Wrinkle Black
Part Number: SSY-91-7502
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
2017+ M8 4.2520in Bore x 4.5in Stroke 117 to 128 Big Bore Kit
Part Number: SSY-910-0733A
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 86-21 Sportster Models 1250cc Conversion Kit - Silver
Part Number: SSY-910-0689
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 66-84 BT 3-31/32in Stroke 3-7/16in Bore 9.0 To 1 Compression Cylinder Kit - Gloss Black
Part Number: SSY-91-9012
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cylinder 84-99 BT w/Super Stock Cylinder Heads 80in 3 1/2in Bore Cylinder & Piston Kit - Natural
Part Number: SSY-91-7213
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
2017+ M8 Models 132in/136in Big Bore Cylinder Kit (Blk Granite w/ Fins) - 4.320in Bore
Part Number: SSY-910-1010A
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 84-99 BT 4 1/8in Bore Cylinder Kit For S&S V111 Engine - Wrinkle Black
Part Number: SSY-910-0359
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 66-84 BT 96in 3-5/8in Big Bore Cylinder & Piston Kit For S&S SH96 Engines - Gloss Black
Part Number: SSY-91-9401
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 84-99 BT 96in 3 5/8in Big Bore Cylinder & Piston Kit - Natural
Part Number: SSY-91-7202
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
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