Availability
Powersports Piston and Ring Kits
ProX Piston Kit KX100 '95-13 (52.45mm)
Part Number: PXR-01-4195-A
Not Yet Reviewed
Estimated Ship Date: May 18, 2026 if ordered today
Estimated Ship Date: May 18, 2026 if ordered today
Repair Kit, Top End, 53.940mm Bore, 8.80 to 1 Compression Ratio, for use on Honda®, Kit
Part Number: NTI-NX-10000K1
Not Yet Reviewed
Estimated Ship Date: May 18, 2026 if ordered today
Estimated Ship Date: May 18, 2026 if ordered today
TOP END REPAIR KIT
Part Number: NTI-NA-40019-2K
Not Yet Reviewed
Estimated Ship Date: May 18, 2026 if ordered today
Estimated Ship Date: May 18, 2026 if ordered today
TOP END REPAIR KIT
Part Number: NTI-NA-20001K
Not Yet Reviewed
Estimated Ship Date: May 18, 2026 if ordered today
Estimated Ship Date: May 18, 2026 if ordered today
TOP END REPAIR KIT
Part Number: NTI-NA-40019-4K
Not Yet Reviewed
Estimated Ship Date: May 18, 2026 if ordered today
Estimated Ship Date: May 18, 2026 if ordered today
Repair Kit, Top End, 71.96mm Bore, 6.00 to 1 Compression Ratio, Polaris, Kit
Part Number: NTI-NA-50000K
Not Yet Reviewed
Estimated Ship Date: May 18, 2026 if ordered today
Estimated Ship Date: May 18, 2026 if ordered today
ProX Piston Kit KX80 '88-00 (79cc) (46.96mm)
Part Number: PXR-01-4118-B
Not Yet Reviewed
Estimated Ship Date: May 18, 2026 if ordered today
Estimated Ship Date: May 18, 2026 if ordered today
Repair Kit, Top End, 81.96mm Bore, 9.00 to 1 Compression Ratio, Arctic Cat, Suzuki, Kit
Part Number: NTI-NA-30010K
Not Yet Reviewed
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Repair Kit, Top End, 40.000mm Bore, 6.00 to 1 Compression Ratio, Yamaha, Kit
Part Number: NTI-NX-40005K
Not Yet Reviewed
Estimated Ship Date: May 19, 2026 if ordered today
Estimated Ship Date: May 19, 2026 if ordered today
Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT
Part Number: NTI-NA-50006-2K
Not Yet Reviewed
Estimated Ship Date: May 18, 2026 if ordered today
Estimated Ship Date: May 18, 2026 if ordered today
Repair Kit, Top End, 93.47mm Bore, 10.20 to 1 Compression Ratio, Polaris, Kit
Part Number: NTI-NA-50004-6K
Not Yet Reviewed
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
TOP END REPAIR KIT
Part Number: NTI-NA-50070-BK1
Not Yet Reviewed
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Repair Kit, Top End, 91.96mm Bore, 9.20 to 1 Compression Ratio, for use on Honda®, Kit
Part Number: NTI-NA-10008K
Not Yet Reviewed
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Repair Kit, Top End, 84.98mm Bore, 9.30 to 1 Compression Ratio, Kawasaki, Kit
Part Number: NTI-NA-20075-CK
Not Yet Reviewed
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT
Part Number: NTI-NA-30008-2K
Not Yet Reviewed
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Repair Kit, Top End, 82.950mm Bore, 9.50 to 1 Compression Ratio, Yamaha, Kit
Part Number: NTI-NA-40005K
Not Yet Reviewed
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
TOP END REPAIR KIT
Part Number: NTI-NA-30080-2K
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Repair Kit, Top End, 79.960mm Bore, 10.20 to 1 Compression Ratio, Polaris, Kit
Part Number: NTI-NA-50080-BK
Not Yet Reviewed
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
ProX Piston Kit KTM250SX '03-22 + KTM250EXC '06-21 (66.37mm)
Part Number: PXR-01-6343-D
Not Yet Reviewed
Estimated Ship Date: May 18, 2026 if ordered today
Estimated Ship Date: May 18, 2026 if ordered today
ProX Piston Kit YZ85 '02-22 (47.46mm)
Part Number: PXR-01-2114-C
Not Yet Reviewed
Estimated Ship Date: May 18, 2026 if ordered today
Estimated Ship Date: May 18, 2026 if ordered today
Piston and Ring Kit, Hypereutectic, 3.915 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit
Part Number: UEM-KB409C-040
Not Yet Reviewed
Estimated Ship Date: Jun 2, 2026 if ordered today
Estimated Ship Date: Jun 2, 2026 if ordered today
Piston and Ring Kit, Hypereutectic, 3.885 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit
Part Number: UEM-KB409C-010
Not Yet Reviewed
Estimated Ship Date: Jun 2, 2026 if ordered today
Estimated Ship Date: Jun 2, 2026 if ordered today
Piston and Ring Kit, Hypereutectic, 3.030 in. Bore, Harley-Davidson®, 9.10:1 Compression Ratio, Kit
Part Number: UEM-KB408C-030
Not Yet Reviewed
Estimated Ship Date: Jun 2, 2026 if ordered today
Estimated Ship Date: Jun 2, 2026 if ordered today
Piston and Ring Kit, Hypereutectic, 3.538 in. Bore, Cast Iron Rings, Harley-Davidson®, Kit
Part Number: UEM-KB305-040
Not Yet Reviewed
Estimated Ship Date: Jun 2, 2026 if ordered today
Estimated Ship Date: Jun 2, 2026 if ordered today
Piston and Ring Kit, Hypereutectic, 3.905 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit
Part Number: UEM-KB409C-030
Not Yet Reviewed
Estimated Ship Date: Jun 2, 2026 if ordered today
Estimated Ship Date: Jun 2, 2026 if ordered today
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