Surron Ultra Bee 21/18 Off-Road Wheel Set – 7075 Rims

Give your Surron Ultra Bee a more traditional full-size dirt bike setup with this 21-inch front and 18-inch rear off-road wheel set.

The larger 21-inch front wheel rolls more easily over rocks, roots, ruts and other rough terrain, helping the Ultra Bee feel more stable and predictable on technical trails. The 18-inch rear accommodates a wider range of off-road tyres with greater sidewall volume for traction and impact absorption.

Supplied as a complete front and rear spoked wheel set with 7075 aluminium rims, hubs and wheel bearings. Available in a range of hub colours to customise the appearance of your Ultra Bee.

Why upgrade to 21/18 wheels?

• Improved stability over rough and uneven terrain
• Better rollover across rocks, roots, logs and ruts
• More traditional motocross and enduro handling
• Greater choice of readily available off-road tyres
• Increased front ground clearance
• More rear tyre sidewall for traction and impact absorption
• Allows a second wheel set to be prepared for different tyres or terrain
• Choice of hub colours for a customised appearance

Wheel specifications

Suggested tyre sizes

• Front: 80/100-21
• Rear: 100/100-18 or another suitable 18-inch Ultra Bee tyre

Tyre width and profile should be selected to suit the intended terrain and must provide adequate chain, swingarm and suspension clearance.

What’s included?

• One 21 × 1.60-inch front spoked wheel assembly
• One 18 × 2.15-inch rear spoked wheel assembly
• Front and rear wheel bearings

What is not included?

• Wheel spacers – the original Surron Ultra Bee spacers must be reused
• Tyres
• Inner tubes
• Rim locks
• Brake rotors
• Rear sprocket
• Brake rotor and sprocket bolts

Important: Retain the original front and rear wheel spacers when removing the factory wheels. These spacers are required when installing the new wheel set.

The original brake rotors, rear sprocket, wheel spacers and associated hardware must be transferred from the factory wheels. Alternatively, separate rotors and a sprocket can be fitted if you want to prepare the new wheels as a more complete second wheel set.

Installation information

Professional installation is recommended. The factory wheel spacers must be reused, and correct spacer placement, brake rotor alignment, sprocket alignment, chain tension and tyre clearance must be confirmed before riding.

After installation, check that both wheels rotate freely without brake, chain or suspension interference. Spoke tension should be checked after the first ride and periodically as part of normal wheel maintenance.

Important compatibility information

This is an off-road-focused wheel conversion designed for the Surron Ultra Bee. Changing wheel and tyre dimensions may affect ride height, gearing, speedometer accuracy, traction-control behaviour and road-legal compliance.

Owners of road-legal Ultra Bee models should confirm applicable compliance requirements before using this wheel set on public roads.

Contact Shock Moto if you would like help selecting compatible tyres, tubes, rim locks, sprocket gearing or installation for this wheel set.