KB Performance V-Twin Piston and Ring Kits

Piston and Ring Kit, Forged, 4.145 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB912C-020

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston and Ring Kit, Forged, 4.155 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB912C-030

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston and Ring Kit, Forged, 4.125 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB912C-STD

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston and Ring Kit, Forged, 4.005 in. Bore, Harley-Davidson®, 9.50:1 Compression Ratio, Kit

Part Number: UEM-KB913C-005

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston and Ring Kit, Forged, 4.030 in. Bore, Harley-Davidson®, 9.50:1 Compression Ratio, Kit

Part Number: UEM-KB913C-030

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston and Ring Kit, Forged, 4.000 in. Bore, Harley-Davidson®, 9.50:1 Compression Ratio, Kit

Part Number: UEM-KB913C-STD

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston and Ring Kit, Forged, 4.005 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB914C-005

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston and Ring Kit, Forged, 4.030 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB914C-030

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston and Ring Kit, Forged, 4.000 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB914C-STD

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston and Ring Kit, Forged, 4.005 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB915C-005

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston and Ring Kit, Forged, 4.010 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB915C-010

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston and Ring Kit, Forged, 4.030 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB915C-030

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston and Ring Kit, Forged, 4.130 in. Bore, Harley-Davidson®, 9.50:1 Compression Ratio, Kit

Part Number: UEM-KB916C-005

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston and Ring Kit, Forged, 4.145 in. Bore, Harley-Davidson®, 9.50:1 Compression Ratio, Kit

Part Number: UEM-KB916C-020

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Pistons, Aluminum, Shovelhead Engine, 3.625 in. Bore, Harley-Davidson®, Pair

Part Number: UEM-KB928C-020

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston Set, KB Forged Coated Piston - Shovelhead Hemi Dome -42.3cc 88-98ci 1948-84 ROD -7.440

Part Number: UEM-KB928C030

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston Set, KB Forged Coated Piston - Shovelhead Hemi Dome -58.2cc 88-98ci 1948-84 ROD -7.440

Part Number: UEM-KB930C030

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston Set, KB Forged Coated Piston - Shovelhead Hemi Dome -58.2cc 88-98ci 1948-84 ROD -7.440

Part Number: UEM-KB930CSTD

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston Set, KB Forged Coated Piston - Knuckle Pan Shovel Hemi Dome -47.6cc 74ci FL, FLH, FX 1941-79

Part Number: UEM-KB931C005

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Powersports Piston, Forged 4032 Alloy, Coated, 3.467 in. Bore, 1.450 in. Comp. Ht, Hemi Dome, -47.6cc, 0.030 in. Oversize, 0.791 in. Pin, Harley®, Set

Part Number: UEM-KB931C030

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Powersports Piston, Forged 4032 Alloy, Coated, 3.477 in. Bore, 1.450 in. Comp. Ht, Hemi Dome, -47.6cc, 0.040 in. Oversize, 0.791 in. Pin, Harley®, Set

Part Number: UEM-KB931C040

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston Set, KB Forged Coated Piston - Knuckle Pan Shovel Hemi Dome -47.6cc 74ci FL, FLH, FX 1941-79

Part Number: UEM-KB931C080

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order