Powersports Top End Engine Kits

Big Bore Kit, 107 in., Drop-In, 3.937 in. Bore, Wrinkle Black Cylinders with Highlighted Fins, Harley-Davidson®, Kit

Part Number: SSY-910-0500

Not Yet Reviewed

Estimated Ship Date: Mar 18, 2026 if ordered today

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Engine Kit, Harley-Davidson®, Twin Cam 88"

Part Number: KPM-20-23050

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Estimated Ship Date: Tomorrow

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Top End Engine Kit, M8 124 in. Big Bore, Wrinkle Black Finish with Highlighted Fins, 4.250 in., Forged Piston, Harley-Davidson®, Kit

Part Number: SSY-910-0625

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Estimated Ship Date: Mar 17, 2026 if ordered today

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

Part Number: SSY-310-1225

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Estimated Ship Date: Mar 18, 2026 if ordered today

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S&S Cycle 2017+ M8 129in Power Pack w/ Chrome Pushrod Tubes & Cam Chain Tensioner - Blk w/ Highlight

Part Number: SSY-310-1223

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Estimated Ship Date: Feb 25, 2026 if ordered today

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S&S Cycle 2017+ M8 129in Power Pack w/ Chrome Pushrod Tubes & Gear Drive Cam - Black w/ Highlight

Part Number: SSY-310-1224

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Estimated Ship Date: Feb 25, 2026 if ordered today

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S&S Cycle 2017+ M8 129in Power Pack w/ Black Pushrod Tubes & Gear Drive Cam - Black w/o Highlight

Part Number: SSY-310-1228

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Estimated Ship Date: Feb 25, 2026 if ordered today

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

Part Number: SSY-310-1229

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Estimated Ship Date: Feb 25, 2026 if ordered today

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

Part Number: SSY-310-1057B

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Estimated Ship Date: Feb 25, 2026 if ordered today

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

Part Number: SSY-310-1059A

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Estimated Ship Date: Feb 25, 2026 if ordered today

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

Part Number: SSY-310-1226

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Estimated Ship Date: Feb 25, 2026 if ordered today

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S&S Cycle Royal Enfield 650 Twins 865cc Big Bore Kit

Part Number: SSY-920-0145

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Estimated Ship Date: Feb 25, 2026 if ordered today

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Top End Engine Kit, M8 124 in. Big Bore, Wrinkle Black Finish, 4.250 in., Forged Piston, Harley-Davidson®, Kit

Part Number: SSY-910-0681

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Estimated Ship Date: Feb 25, 2026 if ordered today

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ENGINE CYLINDERS, 07-UP TWINCAM (INC 06 DYNA), 4" CYLINDER KIT SIL

Part Number: SSY-910-0650

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Estimated Ship Date: Feb 27, 2026 if ordered today

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ENGINE CYLINDERS, 99-06 TWIMCAM (EXC 06 DYNA), POWER PACK 585CE SIL

Part Number: SSY-330-0662

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Estimated Ship Date: Feb 27, 2026 if ordered today

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ENGINE CYLINDERS, 07-UP TWINCAM (EXC 17 FLH/FLT INC 06 DYNA), POWER PACK 585CE SIL

Part Number: SSY-330-0666

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Estimated Ship Date: Feb 27, 2026 if ordered today

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PISTONS, S&S 106" BIG BORE HOT SETUP KT

Part Number: SSY-900-0354

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

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PERFORMANCE, 131" KIT - HIGHLIGHTED FINS M8

Part Number: SSY-910-0762

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Estimated Ship Date: Feb 27, 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: Feb 27, 2026 if ordered today

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S&S Cycle 66-84 BT 80in 3-1/2in Bore Cylinder and High Compression Piston Kit

Part Number: SSY-91-9023

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Estimated Ship Date: Feb 27, 2026 if ordered today

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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

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Estimated Ship Date: Feb 27, 2026 if ordered today

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S&S Cycle 2017+ M8 128in CI Oil Cooled Power Pack w/ Chrome Pushrod Tubes w/ Highlight - Wrinkle Blk

Part Number: SSY-310-1104A

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Estimated Ship Date: Feb 25, 2026 if ordered today

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S&S Cycle 2017 M8 Models 128in CI Oil Cooled w/ Chrome Pushrod Tubes & Highlighted Fins

Part Number: SSY-310-1106A

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Estimated Ship Date: Feb 25, 2026 if ordered today

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S&S Cycle 2017+ M8 128in CI Oil Cooled Power Pack w/ Chrome Pushrod Tubes w/ Highlight Black Granite

Part Number: SSY-310-1110A

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Estimated Ship Date: Feb 25, 2026 if ordered today

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

Part Number: SSY-310-1107B

Not Yet Reviewed

Estimated Ship Date: Feb 25, 2026 if ordered today

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