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Engine Kits & Rotating Assemblies
Top End Engine Kit, Sidewinder Big Bore, Black Wrinkle Finish, 4 in., Forged Piston, Harley-Davidson®, Kit
Part Number: SSY-910-0651
Not Yet Reviewed
Estimated Ship Date: Feb 27, 2026 if ordered today
Estimated Ship Date: Feb 27, 2026 if ordered today
ENGINE PERFORMANCE, 124" 4-1/8" BORE, CYLNDR ST 4-1/8" BR 124"
Part Number: SSY-910-0338
Not Yet Reviewed
Estimated Ship Date: Feb 27, 2026 if ordered today
Estimated Ship Date: Feb 27, 2026 if ordered today
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: Feb 27, 2026 if ordered today
Estimated Ship Date: Feb 27, 2026 if ordered today
S&S 98 BIG BORE KIT BLK
Part Number: SSY-910-0481
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
TOP END KIT 71.95/+0.01 11:1 KTM
Part Number: NTI-NX-70034-BK1
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
TOP END KIT CERAMIC COMP CYL 47.44/+0.50 11:1 YAM
Part Number: NTI-NX-40098K
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
TOP END KIT 92.97/+0.01 11:1 POL
Part Number: NTI-NA-50098-BK
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
TOP END KIT 87.96/STD HUSQ/KTM
Part Number: NTI-NX-70062K2
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
TOP END KIT CERAMIC COMP CYL 47.45/+0.51 11:1 YAM
Part Number: NTI-NX-40098-BK
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
TOP END KIT 43.44/STD 11:1 YAM
Part Number: NTI-NX-40097K
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
TOP END KIT FORGED 76.95/STD YAM
Part Number: NTI-FX-40050K
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
TOP END KIT 92.98/+0.02 11:1 POL
Part Number: NTI-NA-50098-CK
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
ProX Engine Kit Plrs. Sptsmn 800 '11-14
Part Number: PXR-10-EK5806-A1
Not Yet Reviewed
Estimated Ship Date: Feb 24, 2026 if ordered today
Estimated Ship Date: Feb 24, 2026 if ordered today
Big Bore Cylinder Kit, Forged Piston, 94mm Bore, Arctic Cat, Kawasaki, Suzuki, ATV, Motorcycle, Kit
Part Number: CLW-41001-K01
Not Yet Reviewed
Estimated Ship Date: Feb 26, 2026 if ordered today
Estimated Ship Date: Feb 26, 2026 if ordered today
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
Not Yet Reviewed
Estimated Ship Date: Feb 27, 2026 if ordered today
Estimated Ship Date: Feb 27, 2026 if ordered today
ProX Engine Kit Plrs. RZR 800 '11-14
Part Number: PXR-10-EK5805-A1
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
ProX Engine Kit Plrs. RZR 800 '11-14
Part Number: PXR-10-EK5805-B1
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
ProX Engine Kit Plrs. Sptsmn800HO '08-09
Part Number: PXR-10-EK5805-A
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
ProX Engine Kit Plrs. RZR800 '08-10
Part Number: PXR-10-EK5806-A
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
TOP END KIT FORGED 77.96/STD 11:1 HUSQ/KTM
Part Number: NTI-FX-70090K
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
TOP END KIT FORGED 76.96/STD 11:1 SUZ
Part Number: NTI-FX-30039K
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
TOP END KIT 87.96/STD HUSQ/KTM
Part Number: NTI-NX-70062K3
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
TOP END KIT FORGED 77.97/+0.01 11:1 HUSQ/KTM
Part Number: NTI-FX-70090-BK
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
TOP END KIT NIKASIL CYL 46.95/STD HUSQ/KTM
Part Number: NTI-NX-70106K
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
TOP END KIT 43.45/+0.01 11:1 YAM
Part Number: NTI-NX-40097-BK
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
