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Description
FEATURES
- 52100 bearing steel is used in these rebuild kits for motocross, off-road, and dual-purpose bikes
- Kits include all the bearings, seals, shafts and spacers required for a complete rebuild
- Thrust bearings are replaced with Teflon® bearings, which perform better in dirt and water
- Expansive application chart covers bikes from the 70's to present
- Imported
Technical Specifications
- MFG. Part Number 28-1139
Vehicle Information
Honda Z50A Motorcycle - Dual-Sport (1968-1978)
The Honda Z50A, a compact mini trail motorcycle, was produced from 1968 to 1978. Throughout its production, it was consistently powered by a robust 49 cc air-cooled, single-cylinder, overhead-cam (OHC) four-stroke engine, delivering approximately 3 horsepower. This engine was paired with a 3-speed semi-automatic transmission featuring a centrifugal clutch, making it accessible for many riders. While the core engine remained unchanged, the Z50A underwent a notable evolution. Early models, from 1968 to 1971 (K0-K2), were known as "Hard Tails" due to their rigid rear frame, lacking rear suspension. A significant update arrived in 1972 with the K3 model, which introduced rear suspension and an all-new chassis, transforming it into the "Soft Tail" and greatly improving ride comfort. The K1 (1969) also brought street-legal lighting. Later models (K4-K6 and subsequent year designations) primarily featured cosmetic changes like tank stripe designs and fender variations. Q: How can I ensure this part fits my Honda Z50A?
A: Please use our year and model selector at the top of the page to confirm compatibility.
Maintenance
| Component | Interval | Details |
| Engine Oil Change | Every 10 hours (recreational use) or every 5 hours (aggressive use) | Check level before each ride. Change more frequently if oil is contaminated or in harsh conditions. |
| Air Filter | Every 15 hours (recreational use) or every 8 to 10 hours (aggressive use) | Inspect regularly, clean or replace as needed, especially after riding in dusty environments. |
| Valve Inspection | Every 30 hours (recreational use) or every 15 to 20 hours (aggressive use) | |
| Top-End Inspection | Every 50 hours (recreational use) or every 25 to 30 hours (aggressive use) |