Finding a reliable rear axle is essential for maintaining smooth, safe dirt bike performance. This guide highlights five high-demand rear axles designed for 12mm and 15mm hub systems, covering bikes from small pit bikes to mid-sized dirt bikes up to 160cc. Each option supports common models and emphasizes durability, compatibility, and ease of installation. Read on to compare dimensions, included hardware, and fit notes to help you choose the right rear axle for your ride.
| Product | Brand | Axle Size | Fit Notes |
|---|---|---|---|
| 12-15mm Rear Wheel Axle Kit | YLQYYH | 12-15mm | 125cc–160cc dirt bikes; includes rotor and sprocket |
| 80/100-12 Rear Wheel With 12-15mm Axle | YLQYYH | 12-15mm | 110cc–160cc pit bikes; complete rear wheel |
| Minho 12mm Rear Axle With Bush | Minho | 12mm | For PIT PRO, dirt bike, scooter, quad ATV |
| 12mm 210mm Rear Axle With Bushings | SIPARTS | 12mm | 50cc–125cc pit bikes; includes bushings |
| 15mm 245mm Rear Wheel Axle | Greesp | 15mm | 125cc–160cc dirt bikes; front/rear axle |
12-15mm Rear Wheel Axle Kit
This rear wheel kit supports both 12mm and 15mm bearings, enabling flexible compatibility with various rear hubs. It is designed for 110cc–125cc dirt bikes and is used on multiple makes, including newer Apollo models. Verify the axle hole size before ordering by checking measurements and photos to ensure a correct rim match. Key dimensions are provided to aid precise selection.
- Dual-size bearing compatibility: 12mm and 15mm
- Includes brake rotor and sprocket
- Rim width about 2.7 inches; diameter roughly 15 inches
- Overall rim width: 6.86 cm (2.7″)
- Brand: YLQYYH
80/100-12 Rear Wheel With 12-15mm Axle
This complete rear wheel uses a 12-15mm axle configuration to accommodate different rear hubs. Designed for 110cc–160cc pit bikes, it supports several makes including TTR, SSR, and BBR variants. Pay attention to the axle hole size and review measurements and photos to confirm compatibility. The wheel includes a 428 sprocket and rotor options for easy installation.
- Dual-size bearings: 12mm and 15mm
- Sprocket: 428 chain; rotor OD about 187 mm
- Axle hole diameter: 12–15 mm
- Ready for 110cc–160cc bikes
- Brand: YLQYYH
Minho 12mm Rear Axle With Bush
Diameter 12mm and length 220mm; this rear axle kit includes three bushings and a single axle. Crafted from high-strength steel alloy, it weighs about 325 grams. Suitable for PIT PRO dirt bikes, scooters, quad ATVs, and similar platforms where a robust rear axle is needed.
- Axle diameter: 12 mm; length: 220 mm
- Includes: 1 rear axle and 3 bushings
- Material: High-strength steel alloy; weight 325 g
- Target: PIT PRO, dirt bikes, scooters, quad ATVs
12mm 210mm Rear Axle With Bushings
This axle features a 12mm diameter with a 210mm length, designed for robust rear-end performance. It includes bushings and is compatible with a wide range of 50cc–125cc pit bikes, mopeds, scooters, ATVs, and mini bikes. Constructed from high-strength steel alloy, it emphasizes durability and smooth operation on and off-road.
- Axle diameter: 12 mm; length: 210 mm
- Includes bushings; polished exterior for easy cleaning
- Fits 50cc–125cc pit bikes and similar machines
- Material: High-strength steel alloy
15mm 245mm Rear Wheel Axle
Designed for larger dirt bikes, this 15mm diameter axle measures 245mm in length, compatible with 110cc–160cc models. Suitable for Pit PRO trail dirt bikes, it provides a solid backbone for front or rear wheel mounting, including spaces for proper alignment and stability during aggressive riding.
- Axle diameter: 15 mm; length: 245 mm
- Front/rear axle application
- Fits 110cc–160cc motorcycles and related dirt bikes
- Brand: Greesp
Buying Guide
Key considerations
Choose between 12mm and 15mm axle diameters based on your hub, rotor, and sprocket compatibility. Measure the axle hole, shoulder length, and dropout spacing to ensure a proper fit. If your bike uses a 12mm hub, a 15mm axle may not fit without adapters. Consider the overall axle length to avoid interference with the swingarm or chain tensioners.
Materials, durability, and finish
Most entries use high-strength steel alloy for durability under rugged riding. A polished or smooth exterior eases maintenance and cleanup. When riding in muddy or sandy environments, durable finishes help resist wear and corrosion.
Included hardware and compatibility
Some listings include bushings, spacers, rotors, or sprockets. Check whether these components meet your machine’s bundle requirements. If you already own a rotor or sprocket, confirm mounting interfaces (e.g., bolt pattern, rotor size, and sprocket teeth) to avoid extra purchases.
Model and bike compatibility
Verify the model year and engine size (e.g., 50cc, 110cc, 125cc, 160cc) to prevent mismatches. Axle lengths should align with your bike’s rear dropout width. If buying for a specific model like Apollo, SSR, TTR, or BB-R, review compatibility notes or user forums for confirmation.
Installation and maintenance tips
Use appropriate torque specifications and thread locker where recommended. Clean threads before installation and inspect bushings for wear. Periodic checks help prevent misalignment and uneven wear on tires and sprockets.