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SKU:
SZ1C05814
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Top End Piston and Gasket Kit for 2000-2002 Honda CR125R 53.94mm
$30.99
In Stock
$30.99
Sale price
$30.99
Regular price
This aftermarket 53.94mm top-end kit fits 2000-2002 Honda CR125R two-stroke motorcycles and includes the piston, rings, wrist pin, clips, pin bearing, and top-end gaskets.
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- 2000 Honda CR125R
- 2001 Honda CR125R
- 2002 Honda CR125R
Product Overview
A CR125R that has become hard to start, lost crisp power, or failed a compression and leak-down check may be ready for top-end service. This kit gathers the usual wear parts needed after the cylinder has been measured and found suitable for a standard-size 53.94mm piston.
A seizure or low-compression reading can also involve damaged plating, an air leak, lean jetting, cooling trouble, or bottom-end wear. Inspect the engine completely so a fresh piston is not installed into a cylinder that will damage it again.
Key Features & Performance
- Standard-size 53.94mm piston for a 54.00mm nominal bore
- Kit includes piston, rings, wrist pin, circlips, and small-end bearing
- Top-end gaskets support a complete cylinder service
- Built for the 2000-2002 CR125R application
- Aftermarket rebuild package for a two-stroke motocross engine
Common Uses
- Restoring compression on a worn but serviceable cylinder
- Repairing top-end damage after a controlled teardown
- Completing scheduled two-stroke piston maintenance
- Reassembling a plated cylinder after professional inspection
Technical Specifications
- Product Type: Two-stroke top-end rebuild kit
- Piston Diameter: 53.94 mm
- Nominal Bore: 54.00 mm
- Included: Piston, rings, wrist pin, clips, pin bearing, and top-end gaskets
- Replacement Type: Aftermarket
Installation & Fitment
- Measure the cylinder bore, taper, out-of-round, and plating condition before ordering
- Check ring end gap and piston-to-cylinder clearance against Honda specifications
- Determine and correct the cause of any previous seizure
- Observe piston orientation and fully seat new circlips with openings positioned correctly
- Perform a leak-down test and follow proper heat-cycle and break-in procedures
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Model names and year ranges are a starting point. Match the original reference number, configuration, connections, mounting points, and product-specific details before ordering.
Frequently Asked Questions
Q: Is this an oversized piston? A: No. It is listed as a 53.94mm standard-size piston for the nominal 54.00mm bore.
Q: Will a new piston fix damaged cylinder plating? A: No. Chipped, scored, or worn plating must be repaired or the cylinder replaced first.
Q: What commonly causes repeated top-end damage? A: Lean jetting, intake leaks, cooling problems, poor lubrication, debris, and incorrect clearances are common causes.
Part Summary
keywords: Honda CR125R top end kit, 2000 CR125R piston 53.94mm, 2001 Honda CR125R rebuild, 2002 CR125R piston gasket kit, two stroke top end repair, CR125 wrist pin bearing kit, 54mm Honda motocross piston, aftermarket CR125R engine parts
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.