Off-road, on-road, the Surge will be great for mountain biking and street cycling. A fantastic and affordable package in a mountain bike.We know bumps may get in the way of your commute, our GR-150 has a blend of wider tyres and comfortable geometry to give you the ultimate adventure bike. Adapt to any terrain with the versatility of the GR-150. Technical Specifications Frame Sizes: 53cm Frame: Alloy 700c Fork: Steel 700c Handlebar: Racing handlebar, Width:440mm Grips: Black EVA Wrap Stem: 90mm, H=40, angle -7° Seatpost: φ27.2*350mm Seat Clamp: φ31.8x13mm Saddle: Black Leather Pedals: 9/16" Plastic L Shift Lever: Shimano A050 - Bar Mounted R Shift Lever: Shimano A050 - Bar Mounted Front Derailleur: Shimano Tourney A070 3sp Rear Derailleur: Shimano Tourney A070 7sp Front Brake: Mechanical Disc Brake 160mm Rear Brake: Mechanical Disc Brake 160mm Freewheel: 14-28T Chainwheel & Cranks: 50*34T 170mm Crank Chain: 1/2"*3/32"*112L Bottom Bracket: L:BB68*119mm Headset: 1-1/8" Front Hub: 32H*100*140 Rear Hub: 32H*135*180 Spokes: 14G Tyre: 700*33C Rim: 700C* 32H Bell: Included *Images provided are for reference only. Actual product may vary. Please note - Due to supplier shortages, we may supply you a product or its components from an equivalent or greater brand. For more details please contact us. Warranty Lifetime warranty on Frame and Fork 12 Months Manufacturer's Warranty on all non-consumable components Consumable parts (including grips, tubes, tyres, cables, brake pads, saddle coverings, chain, spokes, cassettes and chain rings) are not covered by the warranty.