Julymoda 80/100-12 Rear Wheel Assembly for Pit Dirt Bike — Pre-mounted Tire & 12mm Bearings, Disc/Sprocket Ready

Julymoda's 80/100-12 rear wheel assembly is a ready-to-install dirt bike rear wheel kit that includes a tire, rim, inner tube and 12mm bearing set designed for pit and small dirt bikes.

This complete rear wheel unit bundles the 80/100-12 tire, a compatible rim with sprocket and disc mounting offsets, and an inner tube so you get one integrated replacement part rather than sourcing pieces separately. The assembly is engineered to match typical small-frame off-road bikes, with a 12mm bearing size and specific mounting distances for disc brake and sprocket alignment, helping speed up installation and reduce fitment guesswork.

What mounting dimensions should I check before buying?

Verify the disc brake and sprocket mount offsets on your bike to confirm compatibility. The Julymoda wheel has a 70mm disc mounting distance and a 65mm sprocket mounting distance — match these to your hub spacing and hub bolt pattern to avoid adapter needs.

• Disc mounting distance: 70mm for brake rotor alignment
• Sprocket mounting distance: 65mm for chainline and hub fit
• Bearing inner diameter: 12mm — check axle and spacer sizes
• Tire size: 80/100-12 for common pit/dirt bike applications

How durable and ride-ready is the wheel out of the box?

The unit arrives pre-assembled so you can mount it and go, with the tire fitted to the rim and an inner tube already included. The rim and tire are selected to tolerate off-road stresses typical of pit bikes, while the 12mm bearing set gives reliable rotational support under normal trail and track loads.

• Pre-mounted tire and tube for faster installation
• 12mm bearings supplied to match common pit bike axles
• Rim built to accept disc rotor and sprocket without modification
• Intended for off-road riding conditions typical of pit bikes

Will this wheel fit my pit or small dirt bike model?

Fitment depends on your bike’s axle diameter, hub spacing and mounting pattern rather than the bike’s make alone. If your machine uses a 12-inch rear wheel and a 12mm bearing axle, and the brake and sprocket bolt pattern align with the listed 70mm and 65mm offsets, this assembly will likely bolt on with minimal changes.

• Tire dimension: 80/100-12 — confirm sidewall and rim width compatibility
• Bearing size: 12mm — ensure axle and spacer match
• Disc/sprocket mount distances: 70mm and 65mm — compare to your hub
• Check chainline and brake clearance before final installation

What’s included and what additional items might I need?

The package ships with one tire, one rim and one inner tube, plus the 12mm bearing set already fitted. You may want basic tools, new axle spacers or fresh hardware, and a torque wrench for safe and correct installation on your bike.

• Included: 1 tire (80/100-12), 1 rim, 1 inner tube
• Included: 12mm bearing set pre-installed
• Recommended: axle spacers, rotor bolts, sprocket bolts if not reusing originals
• Recommended: wheel alignment, torque tools and threadlocker where required

Who is this for? Riders and mechanics who need a fast, single-purchase rear wheel replacement for pit bikes and small dirt bikes will appreciate this Julymoda assembly. It’s aimed at owners who prefer a plug-and-play solution with the core mechanical dimensions (80/100-12 tire, 12mm bearings, 70mm disc mount, 65mm sprocket mount) already matched — making it a practical swap for weekend trail riders, track-day hobbyists, and service shops handling routine rear-wheel repairs.