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 Marlin 7 Mountain Bike 2021
If you're an aspiring racer, the Trek Marlin 7 Mountain Bike is a great entry-point into the XC discipline. This hardtail bike pairs an aluminium frame with a 100mm travel RockShox Judy fork, featuring a lockout so you can ride harder and faster over the smooth stuff and get the shock absorption you need when the trails turn rough. A Shimano Deore drivetrain, in a 1x10-speed configuration, makes for easier setup and operation, less risk of chain drop and reduced maintenance, while the hydraulic discs ensure braking is reliable and consistently powerful in all conditions.
Finishing kit is frame-size-specific as are the wheels, making the handling and feel of the bike better matched to the size of the frame and the height of the rider. XS and S frames use 27.5" wheels and have a curved top tube allowing for more standover height. The Bontrager wheel and tyre combination is a robust pairing that will roll fast and grip well across a range of conditions.
- Lightweight Alpha Silver Aluminium frame
- RockShox Judy fork with 100mm travel and lockout feature
- 1x Shimano Deore 10-speed drivetrain, wide-ranging 11-46-tooth cassette and hydraulic disc brakes
- Internal cable routing
- Marlin models in XS and S frame sizes have a curved top tube and a lower standover height that makes it easier for smaller riders to mount and dismount
|Frame||Trek Alpha Silver Aluminium, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR|
|Fork||RockShox Judy, coil spring, preload, TurnKey lockout, 100mm QR, 100mm travel|
|Bottom Bracket||FSA, 73mm, threaded cartridge|
|Stem||Bontrager alloy, 31.8mm, Blendr compatible, 7 degree|
|Handlebar||Bontrager alloy, 31.8mm, 5mm rise|
|Grips||Bontrager XR Trail Comp, nylon lock-on|
|Front Brake||Shimano MT200 hydraulic disc|
|Rear Brake||Shimano MT200 hydraulic disc|
|Brake Levers||Shimano Deore M4100|
|Rear Derailleur||Shimano Deore M5120, long cage|
|Shift Levers||Shimano Deore M4100, 10-speed|
|Chain||KMC X10, 10-speed|
|Cassette||Shimano Deore M4100, 11-46, 10-speed|
|Crankset||FSA Alpha Drive, 28T steel ring, Boost|
|Front Wheel||Formula DC-20, alloy, 6-bolt, 5x100mm QR hub / Bontrager Connection, double-wall, 32-hole, 20mm width, presta valve rim|
|Rear Wheel||Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5mm QR / Bontrager Connection, double-wall, 32-hole, 20mm width, presta valve rim|
|Front Tyre||Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20" (27.5" XS/S), clincher|
|Rear Tyre||Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20" (27.5" XS/S), clincher|
|Saddle||Bontrager Arvada, steel rails, 138mm width|
|Seatpost||Bontrager alloy, 31.6mm, 12mm offset|
|Pedals||VP-536 nylon platform|
|Manufacturer Claimed Weight||13.77kg / 30.35lbs (size M)|
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.
Trek Marlin 7 Mountain Bike 2021 Sizing
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