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

• Drop Ship
• Free Shipping
• $10 Summit Bucks
• Special Order

Top End Engine Kit, 97 in. Big Bore, Black Wrinkle Finish, Forged Pistons, Gaskets, Harley-Davidson®, Kit

Part Number: SSY-910-0205

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

• Free Shipping
• $10 Summit Bucks
• Special Order

S&S 98 BIG BORE KIT BLK

Part Number: SSY-910-0481

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping
• $10 Summit Bucks

Big Bore Cylinder Kit, CYLINDER KIT BB 95.00/+3.0 11.5:1 KAW

Part Number: CLW-CW31015K01

Not Yet Reviewed

Estimated Ship Date: Mar 18, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Standard Bore Cylinder Kit, CYLINDER KIT HC 93.00/STD 11.5:1 POL

Part Number: CLW-CW60007K01HC

Not Yet Reviewed

Estimated Ship Date: Mar 18, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

S&S Cycle 86-19 Sportster Models 883 to 1200cc Conversion Kit - Wrinkle Black

Part Number: SSY-910-0687

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

• Drop Ship
• Free Shipping
• $10 Summit Bucks
• Special Order

Standard Bore Cylinder Kit, CYLINDER KIT 85.00/STD 10.7:1 KAW

Part Number: CLW-CW30013K02

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Standard Bore Cylinder Kit, CYLINDER KIT HC 85.00/STD 11.5:1 KAW

Part Number: CLW-30007-K03HC

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Top End Engine Kits STANDARD BORE KIT HI COMP STANDARD BORE KIT HI COMP

Part Number: CLW-60001-K01HC

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

BIG BORE KIT

Part Number: CLW-61002-K02

Not Yet Reviewed

Estimated Ship Date: Mar 20, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

CYLINDER, STANDARD BORE KIT HI COMP POLARIS

Part Number: CLW-60004-K01HC

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

• Free Shipping
• Special Order

S&S Cycle 99-06 BT 4-1/8in Bore Cylinder Kit For Early Production S&S T117 Engines - Silver

Part Number: SSY-910-0218

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

• Free Shipping
• $10 Summit Bucks
• Special Order

S&S Cycle 84-99 BT 96in 3-5/8in Big Bore Cylinder & Piston Kit For S&S SH96 Engines - Natural

Part Number: SSY-91-7207

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

• Free Shipping
• $10 Summit Bucks
• Special Order

S&S Cycle 84-99 BT w/ Super Stock Heads 89in 3-1/2in Bore Cylinder and Piston Kit

Part Number: SSY-91-7715

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

• Free Shipping
• $10 Summit Bucks
• Special Order

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

Part Number: SSY-910-0691

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

• Free Shipping
• $10 Summit Bucks
• Special Order

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: Feb 27, 2026 if ordered today

• Free Shipping
• $10 Summit Bucks
• Special Order

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

Part Number: SSY-910-0689

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

• Free Shipping
• $10 Summit Bucks
• Special Order

S&S Cycle 86-03 Sportster Models 1200cc Cylinder and Piston Kit - Wrinkle Black

Part Number: SSY-910-0696

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

• Free Shipping
• $10 Summit Bucks
• Special Order

S&S Cylinder 84-99 BT w/Super Stock Cylinder Heads 89in 3 1/2in Bore Cylinder & Piston Kit - Wblack

Part Number: SSY-91-7711

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

• Free Shipping
• $10 Summit Bucks
• Special Order

107" BIG BORE KIT SIL

Part Number: SSY-910-0480

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

• Free Shipping
• $10 Summit Bucks
• Special Order

Top End Engine Kit, 97 in. Big Bore, Silver Finish, Forged Pistons, Gaskets, Harley-Davidson®, Kit

Part Number: SSY-910-0201

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

• Free Shipping
• $10 Summit Bucks
• Special Order

S&S Cylinder 84-99 BT w/Super Stock Cylinder Heads 89in 3 1/2in Bore Cylinder & Piston Kit - Natural

Part Number: SSY-91-7211

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

• Free Shipping
• $10 Summit Bucks
• Special Order

S&S Cycle 84-99 BT 88in 3 5/8in Big Bore Cylinder & Piston Kit - Natural

Part Number: SSY-91-7002

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

• Free Shipping
• $10 Summit Bucks
• Special Order

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: Mar 16, 2026 if ordered today

• Free Shipping
• $10 Summit Bucks
• Special Order

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: Mar 16, 2026 if ordered today

• Free Shipping
• $10 Summit Bucks
• Special Order