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SKU:
NLT2D05883
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Yamaha PW80 & BW80 Crankshaft Rebuild Kit with Bearings and Seals
$113.99
In Stock
$113.99
Sale price
$113.99
Regular price
Aftermarket crankshaft rebuild kit with main bearings and oil seals for Yamaha PW80 Y-Zinger 1983-2006 and BW80 Big Wheel 1986-1990 models.
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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
- Yamaha PW80 Y-Zinger — 1983-2006
- Yamaha BW80 Big Wheel — 1986-1990
Product Overview
Bottom-end knocking, vertical rod play, a seized main bearing, or metal found during a PW80 teardown points beyond a simple top-end job. This kit supplies the crankshaft, bearings, and seals needed when the cases are already being split for a proper lower-engine rebuild.
Cylinder condition, piston clearance, transmission bearings, and case sealing surfaces should be measured while the engine is apart. Correct assembly tools and crank alignment matter on a two-stroke engine.
Key Features & Performance
- Crankshaft assembly with two main bearings and two oil seals
- Covers PW80 and BW80 stock-style bottom-end service
- Replaces worn rod and crank components during engine overhaul
- Aftermarket rebuild set for two-stroke engines
Replaces Part Numbers
- 4BC-11400-00-00
- 1HA-11400-00-00
- 1W7-11400-02-00
- 1W7-11400-01-00
- 93310-11268-00
- 93306-20529-00
Common Uses
- Crank or connecting-rod knock
- Main bearing noise or seizure
- Excessive rod play found during teardown
- Complete engine rebuild after piston or bearing failure
Technical Specifications
- Product Type: Crankshaft rebuild kit
- Engine Type: Two-stroke
- Included: Crankshaft, 2 bearings, 2 seals
- Replacement Type: Aftermarket
Installation & Fitment
- Split and clean the crankcases using the correct service procedure
- Inspect the cylinder, piston, small-end bearing, and transmission
- Press bearings and crankshaft without loading the wrong surfaces
- Pressure-test the sealed crankcase before final use
Compatibility Notice
Verify the motorcycle model code, crank dimensions, bearing numbers, seal sizes, and transmission configuration. A crankshaft job requires measurement and specialized tools.
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Frequently Asked Questions
Q: Is this only a top-end kit? A: No. It is a bottom-end crankshaft kit with main bearings and seals.
Q: Does it fit the BW80? A: It is listed for 1986-1990 BW80 Big Wheel models as well as the PW80 years shown.
Q: What causes crank failure? A: Lubrication problems, dirt ingestion, overheating, bearing age, or debris from a piston failure are common causes.
Q: Should the piston be reused? A: Only after measurement and inspection; many rebuilds need piston, rings, and cylinder work in addition to this kit.
Part Summary
keywords: Yamaha PW80 crankshaft kit, BW80 Big Wheel crank replacement, PW80 main bearings and seals, 4BC-11400-00 crank fit, Y-Zinger bottom end rebuild, aftermarket PW80 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.