Home / HOT RODS / 1987-1989 Honda TRX250R Complete Bottom End Rebuild Kit | Hot Rods + Wiseco + Vertex

1987-1989 Honda TRX250R Complete Bottom End Rebuild Kit | Hot Rods + Wiseco + Vertex

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Regular price $1,319.47 Sale price$1,199.95

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Piston Size

66.00mm — STD

66.50mm — +0.50mm

66.75mm — +0.75mm

67.00mm — +1.00mm (526P4)

67.00mm — +1.00mm (562P4)

67.50mm — +1.50mm

68.00mm — +2.00mm (526P8)

68.00mm — +2.00mm (562P8)

68.50mm — +2.50mm

69.00mm — +3.00mm

69.50mm — +3.50mm

✓ Fits: 1987 Honda TRX250R | 1988 Honda TRX250R | 1989 Honda TRX250R

✓ What's Included:

Hot Rods CBK0043 Complete Bottom End Kit — crankshaft, main bearings & seals, complete engine gasket set
Wiseco Pro-Lite Forged Piston Kit — your choice of bore size (STD through +3.50mm)
Vertex 821814 Water Pump Rebuild Kit — inner clutch cover gasket, water pump cover gasket, all bearings, seals and washers, mechanical seal included
All OEM Honda transmission & countershaft bearings for a complete bottom end rebuild

✓ Complete Bearing List Included:

91001-KA4-741 — Radial Ball Bearing 22x56x14 (x1)
91008-KAE-731 — Radial Ball Bearing (x3)
91004-GC4-731 — Radial Ball Bearing 25x42x9 (x3)
91006-HA2-008 — Bearing 17x40x12-U (x1)
91021-148-004 — Needle Bearing 1010 (x1)
91022-KA4-740 — Shell Bearing 33x38x8 (x1)
Wristpin Bearing -- Wiseco - B1003

✓ Features:

Everything needed for a complete TRX250R bottom end rebuild — one kit, no hunting for individual parts
Hot Rods heavy-duty OE replacement crankshaft trusted by builders and racers
Wiseco Pro-Lite piston forged from high-silicon low-expansion aluminum for superior strength and longer life
Diamond-turned CNC finish guarantees zero size variation — compatible with all cylinder bore compositions
Vertex water pump kit meets or exceeds OEM quality — mechanical seal included
Select your piston bore size at checkout — STD 66.00mm through +3.50mm 69.50mm available
All OEM Honda transmission and countershaft bearings included — sourced new
Hot Rods gasket set covers the complete engine — no additional gaskets needed
Note: Overbore pistons require cylinder to be bored to match. Verify your bore before ordering.

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- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch

Made-to-Order Items:
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Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.

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