Availability
Engine Rotating Assemblies & Rebuild Kits
Pro LS 4340 Rotating Assembly, 347 Cid., 3.903 bore, 3.622 stroke, 58x, 6.098 rod, 3cc dome, 11:1 @ 65cc, 10.6:1 @ 68cc, File-Fit Rings, H Bearings
Part Number: SUM-R58369033
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
TOP END REPAIR KIT
Part Number: NTI-NA-50001K
Not Yet Reviewed
Estimated Ship Date: Apr 7, 2026 if ordered today
Estimated Ship Date: Apr 7, 2026 if ordered today
TOP END REPAIR KIT
Part Number: NTI-NX-30080K
Not Yet Reviewed
Estimated Ship Date: Apr 9, 2026 if ordered today
Estimated Ship Date: Apr 9, 2026 if ordered today
Cylinder Kit, Forged Piston, Standard Bore, Gaskets, Rings, Yamaha, Motorcycle, Kit
Part Number: CLW-20001-K02
Not Yet Reviewed
Estimated Ship Date: Apr 9, 2026 if ordered today
Estimated Ship Date: Apr 9, 2026 if ordered today
Cylinder Kit, Forged Piston, 2.00mm Oversize Bore, KTM, 13.50 to 1 Compression Ratio, Kit
Part Number: CLW-50001-K01
Not Yet Reviewed
Estimated Ship Date: Apr 9, 2026 if ordered today
Estimated Ship Date: Apr 9, 2026 if ordered today
Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT
Part Number: NTI-NA-50019-2K
Not Yet Reviewed
Estimated Ship Date: Apr 8, 2026 if ordered today
Estimated Ship Date: Apr 8, 2026 if ordered today
Piston, TOP END REPAIR KIT
Part Number: NTI-NX-20000-BK
Not Yet Reviewed
Estimated Ship Date: Apr 9, 2026 if ordered today
Estimated Ship Date: Apr 9, 2026 if ordered today
Repair Kit, Top End, 89.960mm Bore, 8.50 to 1 Compression Ratio, for use on Honda®, Kit
Part Number: NTI-NA-10000K
Not Yet Reviewed
Estimated Ship Date: Apr 8, 2026 if ordered today
Estimated Ship Date: Apr 8, 2026 if ordered today
Cylinder Head NAMURA TOP END REPAIR KIT NAMURA TOP END REPAIR KIT
Part Number: NTI-NA-20005-2K
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
TOP END REPAIR KIT
Part Number: NTI-NX-10081-BK
Not Yet Reviewed
Estimated Ship Date: Apr 9, 2026 if ordered today
Estimated Ship Date: Apr 9, 2026 if ordered today
Rebuild Kit, Complete Bottom End, Suzuki, LT250R Quadracer, Kit
Part Number: HRI-CBK0065
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
CYL WORKS STD BORE KIT YZ450F
Part Number: CLW-20005-K02
Not Yet Reviewed
Estimated Ship Date: Apr 7, 2026 if ordered today
Estimated Ship Date: Apr 7, 2026 if ordered today
Repair Kit, Top End, 67.47mm Bore, 9.20 to 1 Compression Ratio, Suzuki, Kit
Part Number: NTI-NA-30000-6K
Not Yet Reviewed
Estimated Ship Date: Apr 8, 2026 if ordered today
Estimated Ship Date: Apr 8, 2026 if ordered today
Repair Kit, Top End, 67.94mm Bore, 10.60 to 1 Compression Ratio, Yamaha, Kit
Part Number: NTI-NX-40026K
Not Yet Reviewed
Estimated Ship Date: Apr 9, 2026 if ordered today
Estimated Ship Date: Apr 9, 2026 if ordered today
Repair Kit, Top End, 66.340mm Bore, 8.70 to 1 Compression Ratio, for use on Honda®, Kit
Part Number: NTI-NX-10025K
Not Yet Reviewed
Estimated Ship Date: Apr 9, 2026 if ordered today
Estimated Ship Date: Apr 9, 2026 if ordered today
ROTATING ASSEMBLY
Part Number: SCA-1-94306BI040
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Standard Bore Cylinder Kit, Forged Piston, 77mm Bore, Kawasaki, Suzuki, Motorcycle, Kit
Part Number: CLW-30001-K01
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
VERTEX TOP END PISTON KIT
Part Number: VPX-VTKTC23623B
Not Yet Reviewed
Estimated Ship Date: Apr 7, 2026 if ordered today
Estimated Ship Date: Apr 7, 2026 if ordered today
Rebuild Kit, Complete Bottom End, for use on Honda®, CRF450R, Kit
Part Number: HRI-CBK0086
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
Gasket Kit BOTTOM END KIT BOTTOM END KIT
Part Number: HRI-CBK0178
Not Yet Reviewed
Estimated Ship Date: Mar 31, 2026 if ordered today
Estimated Ship Date: Mar 31, 2026 if ordered today
Gasket Kit COMPLETE BOTTOM END KIT COMPLETE BOTTOM END KIT
Part Number: HRI-CBK0182
Not Yet Reviewed
Estimated Ship Date: Mar 31, 2026 if ordered today
Estimated Ship Date: Mar 31, 2026 if ordered today
Repair Kit, Top End, 46.940mm Bore, 8.20 to 1 Compression Ratio, KTM, Kit
Part Number: NTI-NX-70004K
Not Yet Reviewed
Estimated Ship Date: Apr 9, 2026 if ordered today
Estimated Ship Date: Apr 9, 2026 if ordered today
Repair Kit, Top End, 66.340mm Bore, 8.50 to 1 Compression Ratio, for use on Honda®, Kit
Part Number: NTI-NX-10027K
Not Yet Reviewed
Estimated Ship Date: Apr 9, 2026 if ordered today
Estimated Ship Date: Apr 9, 2026 if ordered today
STD BORE KIT HI COMP
Part Number: CLW-20002-K03HC
Not Yet Reviewed
Estimated Ship Date: Apr 9, 2026 if ordered today
Estimated Ship Date: Apr 9, 2026 if ordered today
Cylinder Kit, Forged Aluminum, Standard Bore, Yamaha, YFM700R, Set
Part Number: CLW-20004-K01
Not Yet Reviewed
Estimated Ship Date: Apr 8, 2026 if ordered today
Estimated Ship Date: Apr 8, 2026 if ordered today
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