S&S Cycle Engine Kits & Rotating Assemblies

S&S Cycle 99-06 BT Replacement 4-1/8in Bore Cylinder & Piston Kit w/ Stock Bolt Pattern

Part Number: SSY-910-0025

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Estimated Ship Date: Mar 25, 2026 if ordered today

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S&S Cycle 66-84 BT 3-31/32in Stroke 3-7/16in Bore 8.0 To 1 Compression Cylinder Kit - Gloss Black

Part Number: SSY-91-9013

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Estimated Ship Date: Mar 25, 2026 if ordered today

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S&S Cycle 86-21 Sportster Models 1250cc Conversion Kit - Silver

Part Number: SSY-910-0689

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Estimated Ship Date: Mar 25, 2026 if ordered today

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S&S Cycle 07-16 BT 124in Standard Compression 4-1/8in Big Bore Kit - Stone Gray

Part Number: SSY-910-0469

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Estimated Ship Date: Mar 25, 2026 if ordered today

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CRANKSHAFT, M8 FLYWHEEL 4-1/2" FULL

Part Number: SSY-320-0603

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Estimated Ship Date: Mar 25, 2026 if ordered today

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PISTONS, PISTON/CYLINDER KIT 124

Part Number: SSY-910-0223

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Estimated Ship Date: Mar 25, 2026 if ordered today

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S&S Cycle Royal Enfield 650 Twins 750cc Big Bore Kit

Part Number: SSY-920-0144

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Estimated Ship Date: Mar 24, 2026 if ordered today

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S&S Cycle 2017+ M8 Models 129in Big-Bore Kit 4.375in Stroke Non-Highlighted Cylinders

Part Number: SSY-910-0844

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Estimated Ship Date: Mar 24, 2026 if ordered today

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S&S Cycle 2017+ M8 Models 4.320in Bore 4.500in Stroke Cylinder Kit - Wrinkle Black w/o Highlight

Part Number: SSY-910-0846

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Estimated Ship Date: Mar 24, 2026 if ordered today

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ENGINE PERFORMANCE, M8 MODELS W/114", 128" BIG BORE KIT M8 BLK

Part Number: SSY-910-0685

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Estimated Ship Date: Mar 24, 2026 if ordered today

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S&S Cycle 2017+ M8 4.250in Bore 550C Cam w/ Chrome Pushrods Power Pack - Wrinkle Black w/ Highlight

Part Number: SSY-310-1101B

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Estimated Ship Date: Mar 24, 2026 if ordered today

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2017+ M8 Models 4.250in Bore 4.500in Stroke Cylinder Kit - Wrinkle Black w/o Highlight

Part Number: SSY-910-0685A

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Estimated Ship Date: Mar 25, 2026 if ordered today

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2017+ M8 4.250in Bore 550C Cam w/ Chrome Pushrods Power Pack - Wrinkle Black w/ Highlight

Part Number: SSY-310-1101C

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Estimated Ship Date: Mar 25, 2026 if ordered today

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1999+ BT 4.937in 3.927in Bore Cylinder - Wrinkle Black

Part Number: SSY-910-0773

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Estimated Ship Date: Mar 25, 2026 if ordered today

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2017+ M8 Models 4.320in Bore 4.500in Stroke Cylinder Kit - Black Granite w/ Highlight

Part Number: SSY-910-0847A

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Estimated Ship Date: Mar 25, 2026 if ordered today

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2017+ M8 Models 4.250in Bore 550C Cam w/ Black Pushrods Power Pack - Black w/ Highlight

Part Number: SSY-310-1054C

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Estimated Ship Date: Mar 25, 2026 if ordered today

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2017+ M8 132in Power Pack w/ Chrm Pushrod Tubes & Cam Chain - Blk Granite w/ Highlight

Part Number: SSY-310-1237C

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Estimated Ship Date: Mar 25, 2026 if ordered today

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2017+ M8 Models 4.250in Bore 550C Cam w/ Chrome Pushrods Power Pack - Black w/ Highlight

Part Number: SSY-310-1050C

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Estimated Ship Date: Mar 25, 2026 if ordered today

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2017+ M8 129in Power Pack w/ Black Pushrod Tubes & Cam Chain Tensioners - Blk w/ Highlight

Part Number: SSY-310-1225C

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Estimated Ship Date: Mar 25, 2026 if ordered today

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84-99 BT 4 1/8in Bore Cylinder & Pistons Kit For S&S V124 Engine - Polished

Part Number: SSY-910-0230

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Estimated Ship Date: Mar 25, 2026 if ordered today

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2017 M8 132in Power Pack w/ Chrome Pushrod Tubes & Cam Chain Tensioners - Blk w/ Highlight

Part Number: SSY-310-1231C

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Estimated Ship Date: Mar 25, 2026 if ordered today

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2017+ M8 124in CI Oil Cooled Power Pack w Black Pushrod Tubes w/o Highlight

Part Number: SSY-310-1057C

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Estimated Ship Date: Mar 25, 2026 if ordered today

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2017+ M8 Models 4.320in Bore 550G Cam Power Pack - Black w/ Highlight

Part Number: SSY-310-1230C

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Estimated Ship Date: Mar 25, 2026 if ordered today

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2017+ M8 Models 4.320in Bore 550C Cam Power Pack - Black Granite w/ Highlight

Part Number: SSY-310-1235C

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Estimated Ship Date: Mar 25, 2026 if ordered today

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2017+ M8 4.2520in Bore x 4.5in Stroke 117 to 128 Big Bore Kit

Part Number: SSY-910-0733A

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Estimated Ship Date: Mar 25, 2026 if ordered today

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