Sonder Frontier Quick, lightweight 29er modern mountain bike, a genuine multi-activity hardtail. Fast and fun without any fuss
Sonder Frontier frame only
Lightweight alloy hardtail mountain bike frame to build your own 29er or 650b+ bike from trail centre to wild and remote landscapes.
Sonder Frontier frame and fork
Alloy frame and fork to build up your own 29er or 650b+ bikepacking dream machine
Sonder Frontier NX1 Rigid Hobo 29er
29er rigid multi activity mountain bike with SRAM NX1 1 x 11 groupset, Sonder rigid fork and Love Mud Hobo 29er wheelset.
Sonder Frontier NX1 Rigid Rumpus 650b+
Quick, lightweight 650b+ fully rigid mountain bike with SRAM NX1 1 x 11 groupset, rigid fork and Love Mud Rumpus 650b+ wheelset.
Sonder Frontier NX1 Reba Rumpus 650b+
Quick, lightweight 650b+ modern mountain bike with SRAM NX1 1 x 11 groupset, Reba fork and Love Mud Rumpus wheelset.
Sonder Frontier NX1 Recon Hobo 29er
Quick, lightweight 29er modern mountain bike with SRAM NX1 groupset, Rockshox Recon fork and Hobo 29er wheelset
Sonder Frontier NX1 Recon Rumpus 650b+
Quick, lightweight 650b+ modern mountain bike with SRAM NX1 1 x 11 groupset, Recon fork and Love Mud Rumpus wheelset.
Quick, lightweight 29er modern mountain bike, a genuine multi-activity hardtail. Fast and fun without any fuss. Take it to a trail centre and go for a new lap record, or load it up with bags and ride rugged country, bothy trips to Cape Wrath and beyond
Hardtail 29er trail centre mountain bike come bikepacker compatible with 650b+. Its beauty is in its simplicity, but don’t confuse simple with basic. Cleans lines, internal routing make Frontier an excpeptional bike.
Frontier is our alloy 29er hardtail - ride it hard around the trail centre, load it up and sneak off for a midweek bikepacking trip through mid-Wales, pocket your passport and continue much further afield.
The geometry is relaxed for long day comfort but its no slouch. The 6061 aluminium frame provides a durable, low maintenance and stiff chassis giving a responsive kick as you demand power when the slope steepens or enjoy feedback and precision through the corners.
Frontier can be tailored to ride how you want it to ride. If fully rigid is not for you the geometry and head angle allows capacity to take a 100 mm fork. So you can have it set up for XC race speed or all day plod comfort and put in the miles. Big tyre clearance gives you the choice of 27.5+ or 29in wheelsets. QR Boost 141 mm rear spacing provide the benefit of stronger, stiffer and more efficient wheels.
Optimised for 1x drivetrains, Frontier is available in NX1 builds with rigid or suspension forks.
Frontier excels both loaded and unloaded, absorbing every surface you ride - you decide how you want to pack for your adventure. With full rack mounts at the back and multiple boss mounts on the fork Frontier is an adaptable offroad explorer. Responsive when loaded up in the modern lightweight bikepacking style of travel, it is more than happy for a set of panniers to be thrown over it.
Wherever you are in the world - squeezing in an afterwork loop or halfway through an adventure of a lifetime; Frontier eats up long distance trails with style and comfort with the shameless enthusiasm of a trail centre hardtail.
The 6061 aluminium tubing is durable, light, low maintenance and stiff.
Wide tyre clearance
Extra width between the chainstays gives you the choice of running 27.5+ tyres up to 3 inches or 29 inch tyres up to 2.4 inches.
Boost axle width
The Frontier frame is designed around QR Boost 141 mm rear spacing providing the benefit of stronger, stiffer and more efficient wheels. Seatstay mounted disc brake for clean lines and damage protection.
Responsive when loaded - Frontier is more than happy to shoulder a pannier.
|Frame Key Features|
|6061 Aluminium frame|
|Optimised for rigid or 100 mm suspension forks|
|Internal cable routing|
|QR Boost 141 rear spacing for wheel strength and optimal chainline|
|Fork built around QR Boost 110 mm spacing|
|Threaded 73 mm BSA BB shell for no-creak assembly|
|Chainstay mounted disc brake for clean lines and damage protection|
|Adventure cage compatible downtube mount|
|Full rack mounts and multiple boss mounts on rigid fork|
|Clearance for 3 inch 650b+ or 2.5 inch 29er tyres|
|Reverb Stealth port|
|EN 14766 compliant|
|Frame Weight: S: 1750 g; M: 1805 g; L: 1935 g; XL: 2040 g|
|Fork Weight: 1090 g|
It is important to get the right size bike, if the bike fits you well it will be faster, more comfortable and easier to handle. Generally we recommend:
- Riders between 5ft 2in and 5ft 7in Medium
- Riders between 5ft 6in and 5ft 10in Large
- Riders between 5ft 9in and 6ft 2in X-Large
- Riders 6ft 2 and over
|ST - Seat tube||380||430||480||520|
|TT - Top tube||566||602||622||647|
|HT - Head tube||110||130||130||150|
|HA - Head angle||68||68||68||68|
|SA - Seat angle||73||73||73||73|
|CS - Chainstay||435||435||435||435|
|BB - BB drop||50||50||50||50|
|FO - Fork offset||51||51||51||51|
|WB - Wheelbase||1089||1127||1147||1174.5|
|SO - Stand over|
|RE - Reach||390||420||440||460|
|SK - Stack|
We minimise the chopping and changing that makes so many other bikes a smorgasbord of bike parts. We spec Frontier with pure NX1 and take pride in offering SRAM just as they designed and tested their componentry to work.
Check out the specs on the individual product pages. They are built to order and are fully customizable – if you want a different stem length, saddle, wheelset, bar or gear ratio then let us know. If you’ve a dream build in mind then please get in touch and we’ll do our best to source the parts you want.
All our bikes are built in-house, checked and signed off by Cytech trained mechanics before being despatched to you in a custom-made bike box.
- What are builds and groupsets?
- Can I set up Sonder Frontier to run as a single speed
- How much does international shipping for Sonder Bikes and Love Mud Wheels cost?
- Common Bike Upgrades: price list
- Why have Alpkit designed their own bikes?
- Are Sonder available outside the UK?
- Which wheelset for which Sonder Bike?
- Try Before Your Buy - Sonder Demo Bikes
- Cycle to Work Schemes
Alpine Bond Warranty
Our titanium frames are handmade and come with a 10 year frame warranty. Our hand welded 6061-T6 alloy triple butted frames come with a 5 year manufacturing defect warranty. All our bikes are built, checked and signed off by Cytech trained mechanics before being despatched to you in a custom-made bike box.
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