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.
Trek Checkpoint ALR 5 Gravel Bike 2023
Trek's Checkpoint ALR 5 Disc Gravel Bike is highly versatile and suited to a variety of riding styles, with a progressive geometry that is designed to be stable at speed and efficient at climbing. The 300 Series Alpha Aluminium frame has multiple mounting points for a rear rack, hydration bottles, mudguards for the wetter weather, and luggage so it can carry as much or as little as is needed. Tubeless-ready Paradigm rims and wide 700x40c gravel-specific tyres add stability and traction and the spacious fork design allows a maximum of 45mm tyres for that chunkier gravel.
The stem is compatible with Blendr accessories for integration of Bontrager specific technology. The Blendr mounts allow you to add lighting and a GPS device without taking up any space on the handlebar.
The GRX groupset is Shimano's gravel-specific offering, pairing a 46/30 chainset with an 11-speed wide ratio cassette providing enough gears for climbing when carrying extra luggage weight or descending forest singletracks. The GRX hydraulic disc brakes deliver powerful stopping technology in all weather conditions.
- Trek 300 Series Alpha Aluminium frame with internal cable routing, rack and mudguard mounts
- Trek Checkpoint carbon fork with rack and mudguard mounts
- Shimano GRX hydraulic flat-mount disc brakes for superior performance
- Shimano GRX 11-speed mechanical groupset
- Bontrager 700c wheelset with tubeless-ready gravel-specific tyres for better traction on rough terrain
- Blendr compatible allows you to clip your gear directly onto the stem
|Frame||Trek 300 Series Alpha Aluminium, tapered head tube, Control Freak internal routing, 3S chain keeper, T47 BB, rack and mudguard mounts, integrated frame bag mounts, flat mount disc, 142x12mm thru-axle|
|Fork||Trek Checkpoint carbon legs, tapered alloy steerer, rack and mudguard mounts, flat mount disc, 12x100mm thru-axle|
|Headset||FSA Integrated, sealed cartridge bearing, 1-1/8" top, 1.5" bottom|
|Bottom Bracket||Praxis, T47 threaded, internal bearing|
|Stem||Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, length 70mm (49), 80mm (52, 54), 90mm (56, 58), 100mm (61)|
|Handlebar||Bontrager Elite Gravel, width 38cm (49), 40cm (52), 42cm (54, 56), 44cm (58, 61)|
|Bar Tape||Bontrager Supertack Perf tape|
|Front Brake||Shimano GRX hydraulic disc, SM-RT70, Center Lock, 160mm rotor|
|Rear Brake||Shimano GRX hydraulic disc, SM-RT70, Center Lock, 160mm rotor|
|Brake Levers||Shimano GRX RX600 hydraulic disc lever|
|Front Derailleur||Shimano GRX RX810, braze-on|
|Rear Derailleur||Shimano GRX RX810, long cage, 34T maximum sprocket|
|Shift Levers||Shimano GRX RX600, 11-speed|
|Cassette||Shimano 105 HG700-11, 11-34t, 11-speed|
|Crankset||Shimano GRX RX600, 46/30T, length 165mm (49), 170mm (52), 172.5mm (54, 56), 175mm (58, 61)|
|Front Wheel||Bontrager Paradigm, tubeless-ready, 24-hole, 21mm width, Hub - Bontrager alloy, sealed bearing, Center Lock disc, 100x12 mm Bontrager Switch thru-axle, 14g stainless steel spokes|
|Rear Wheel||Bontrager Paradigm SL, tubeless-ready, 24-hole, 21mm width, Hub - Bontrager alloy, sealed bearing, Center Lock disc, Shimano 11-speed freehub, 142x12mm Bontrager Switch thru-axle, 14g stainless steel spokes|
|Front Tyre||Bontrager GR1 Team Issue, tubeless-ready, Inner Strength casing, aramid bead, 120TPI, 700x40c, maximum tyre size - 700x45c / 650x2.1"|
|Rear Tyre||Bontrager GR1 Team Issue, tubeless-ready, Inner Strength casing, aramid bead, 120TPI, 700x40c - 700x45c / 650x2.1"|
|Saddle||Bontrager P3 Verse Comp, steel rails, width 155mm (49, 52), 145mm (54, 56, 58, 61)|
|Seatpost||Bontrager alloy, 27.2mm, 12mm offset, 330mm length|
|Pedals||Available to be purchased separately|
|Claimed Manufacturer's Weight||9.75kg / 21.50lbs (56)|
|Please note||Accessories shown are for illustration only and not included|
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 included), 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. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.