Upgrade your ride with the CST Surge 20 x 4.0 Tyre, a premium fat tyre designed to deliver outstanding grip, durability, and confidence for electric bikes. Whether you're commuting through the city, cruising coastal paths, or exploring gravel tracks, the Surge is built to provide a smooth, stable, and reliable riding experience.

Featuring CST's DC2 Dual Compound rubber technology, the Surge offers an excellent balance of long-lasting tread life and dependable traction. The Defender Mix tread pattern provides confident handling across a variety of surfaces, while the robust 40 TPI wire bead construction delivers the strength and durability needed for everyday riding and e-bike use.

With an E-50 rating, the CST Surge is designed to meet the demands of modern electric bikes, making it an ideal replacement tyre for riders seeking comfort, control, and performance.

Key Features

• 20 x 4.0-inch fat tyre designed for electric bikes and fat bikes.
• DC2 Dual Compound rubber for improved grip and extended tyre life.
• Defender Mix tread pattern for excellent traction on mixed terrain.
• Durable 40 TPI wire bead construction for strength and reliability.
• E-50 rated for compatible higher-speed electric bikes.
• Smooth rolling design with confident handling and stability.
• Suitable for everyday commuting and recreational riding.

Perfect For Riding On

• Urban roads
• Bike paths
• Gravel roads
• Hard-packed dirt trails
• Coastal tracks
• Recreational riding

Complete Your Ride

Pair your CST Surge 20 x 4.0 Tyre with a quality inner tube, portable bike pump, tyre levers, puncture repair kit, and chain lock to keep your bike ready for every adventure.

Ideal For

Perfect for:

• Fat tyre e-bike riders
• Daily commuters
• Recreational cyclists
• Weekend explorers
• Adventure riders
• Anyone replacing worn or damaged 20 x 4.0 tyres

Ride with confidence wherever the road or trail takes you. The CST Surge 20 x 4.0 Tyre combines reliable grip, durable construction, and all-round performance to keep your e-bike rolling smoothly on every journey.