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Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched...

Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched top end kits, and complete rotating assemblies from the biggest names in the industry. You can add a set of high-flow cylinder heads to your powerplant, upgrade your valvetrain, improve your oiling system, or drop in a new set of pistons. We also have a complete selection of crankshafts, connecting rods, harmonic balancers, pulleys, and engine brackets. We even have everything you need to restore the horsepower that time has stolen from your...

Showing All Items, Including Not in Stock Items That Match "S-650"

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Results 1 - 25 of 216

S&S Cycle 750cc Big Bore Kits 920-0144

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

Part Number: SSY-920-0144

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

S&S Cycle Super Stock Cylinder Heads 90-1360

S&S Cycle 84-99 BT Super Stock Cylinder Heads - Wrinkle Natural Aluminum Finish

Part Number: SSY-90-1360

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

S&S Cycle Super Stock Cylinder Heads 90-1371

S&S Cycle 99-06 BT Super Stock Cylinder Heads - Polished Aluminum Finish

Part Number: SSY-90-1371

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

S&S Cycle Super Stock Cylinder Heads 90-1504

HEAD KIT SUPER STOCK BLK

Part Number: SSY-90-1504

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

S&S Cycle Super Stock Cylinder Heads 90-1361

S&S Cycle 84-99 BT Super Stock Cylinder Heads - Wrinkle Black Aluminum Finish

Part Number: SSY-90-1361

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

S&S Cycle Super Stock Cylinder Heads 90-1015

S&S Cycle 84-99 BT 83cc Cylinder Head Kit For S&S 4in Bore - Natural Aluminum Finish

Part Number: SSY-90-1015

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

S&S Cycle Super Stock Cylinder Heads 900-0966

06-12 Dyna 4-1/8in Bore Front Head Assembly

Part Number: SSY-900-0966

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

S&S Cycle Powersports Pistons 920-0143

S&S Cycle Royal Enfield 650 Twin High-Compression 11 To 1 Piston Kit

Part Number: SSY-920-0143

Not Yet Reviewed

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S&S Cycle Powersports Valve Spring Shims 900-1015

S&S Cycle Royal Enfield 650 Twin Valve Spring Shim Kit

Part Number: SSY-900-1015

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

S&S Cycle Powersports Pistons 920-0146

Royal Enfield 650 Twin 750cc Piston Kit

Part Number: SSY-920-0146

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

S&S Cycle Cylinder Sleeves 910-0753A

Royal Enfield 650 Twin 865cc Cylinder Liner

Part Number: SSY-910-0753A

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Wiseco Powersports Piston Wrist Pins S650

Piston Pin, Steel, Tapered, 20.00mm x 65.00mm, Kawasaki, Polaris, Ski-Doo, Each

Part Number: WIS-S650

Not Yet Reviewed

Estimated Ship Date: May 4, 2026 if ordered today

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Estimated Ship Date: May 4, 2026 if ordered today

MAHLE Original Timing Gears S-650

Camshaft Sprocket - Ford Pass. & Trk. 177 (2.9L) Eng. (1986-92), 244 (4.0L) Eng. (1991-94);Mazd

Part Number: MAH-S650

Not Yet Reviewed

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Cloyes Gear Timing Gears S650

CAM SPROCKET

Part Number: CLO-S650

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

S&S Cycle Powersports Pistons 920-0147

Royal Enfield 650 Twin 865cc Piston Kit

Part Number: SSY-920-0147

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Oil Filter, Powersports, Canister, M20 x 1.5 Thread, 2.87 in. Tall, 2.70 in. OD, for use on Honda®, MV Agusta, Kawasaki, Triumph, Yamaha, Each

Part Number: KNN-KN-204-1

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

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