Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.
We offer FREE DELIVERY of your bike to your home or place of work. Once you've placed your order, our Customer Care team will be in contact to offer a convenient delivery date of your choice.
We've partnered with PedalSure to offer you 30-DAYS FREE bike insurance on new bikes over £400. Visit our Cycle Insurance page to learn more and claim.
GT La Bomba Pro Mountain Bike 2020
The GT La Bomba Pro Mountain Bike is for riders serious about dirt jumping. With a tough aluminium frame and 100mm travel fork to take the sting out of flat landings it is perfect for tricks and big air. The single gear and rear hydraulic brake keep things simple like a grown up BMX, and the double-wall rims are also built to withstand some hard knocks. A 785mm wide handlebar and 26” tyres help the bike’s agility and make it easier to control both on the ground and in the air.
Highlights
- GT Dirt Jump 6061 aluminium frame, 15mm horizontal adjustable dropout with integrated chain tensioners
- Manitou Circus Expert fork with 100mm travel
- 26” double wall wheels
- Promax hydraulic disc brake
Technical Specification
| Frame | GT Dirt Jump 6061 aluminium, Euro threaded BB, disc brake mount, integrated 1-1/8"-1.5" taper head tube, 15mm horizontal adjustable dropout with integrated chain tensioners |
| Fork | Manitou Circus Expert, coil with rebound adjust, 20mm thru-axle dropout, 1-1/8"-1.5" taper AL steerer, preload adjust 100mm travel |
| Bottom Bracket | Euro sealed bearing |
| Stem | GT Jumper 35mm reach |
| Handlebar | Spank Spoon 785, Alloy 31.8mm, 60mm Rise, 10-degree back, 4-degree up, 785mm width |
| Front Brake | N/A |
| Rear Brake | Promax hydraulic disc, 160mm rotor |
| Brake Levers | Promax hydraulic disc |
| Front Derailleur | N/A |
| Rear Derailleur | N/A |
| Shift Levers | N/A |
| Cassette | N/A |
| Crankset | GT Power Series Seamless Tubular Cr-Mo., 170mm arms, cold-forged Cr-Mo 19mm x 48T Spline Spindle, 25T GT 5mm AL chain wheel |
| Front Wheel | GT Alloy hub with 26” double-wall rim |
| Rear Wheel | GT Alloy hub with 26” double-wall rim |
| Front Tyre | GT LP-5, 26 x 2.2" clincher |
| Rear Tyre | GT LP-5, 26 x 2.2"clincher |
| Saddle | GT Pivotal Slim Padded |
| Seatpost | GT Alloy Pivotal 27.2 x 200mm |
| Pedals | GT Low Profile Large Size Platform Design, PP Material, Boron Axle |
Built, Checked, Tuned and Tested
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if specified), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. We do not install accessories to bikes, including mudguards.