• Frontier SLX
  • Frontier SLX
  • Frontier SLX

    • Sale

    Frontier SLX

    Multi-activity trail bike

    £1,249 £1,449

    or from £54 /month

    1

    Select Options

    2

    Customize

    3

    Select Accessories

    Reset

    Quick, lightweight 29er modern mountain bike with Shimano SLX 1x12 groupset, Rockshox Recon Silver RL fork and Sonder Nova wheelset.
    Buy Now. Be Riding in 5 days.

    1

    Select Options

    Edit

    • Size
    • Colour

    • Size:

    • Colour:

    2

    Customize

    Edit

    Every Sonder bike is built to order so tell us exactly how you want it. Make any changes you want from the standard build and when you're done, just hit “Add to Bag” at the bottom of the page.

    Handlebar

    Sonder Aspect Riser [OEM]
    Sonder Aspect Riser 780mm

    +£0.00

    Sonder Horizon Flat [OEM]
    Sonder Horizon Flat 720mm

    +£0.00

    Sonder Confucius
    Sonder Confucius

    +£34.99 +£24.99

    sonder horizon carbon flatcar handlebar
    Sonder Horizon Carbon Flat Black

    +£99.99 +£74.99

    sonder aspect carbon flat handlebar flatbar
    Sonder Aspect Carbon Riser 780mm

    +£74.99

    Saddle

    Sonder Abode [OEM]
    Sonder Abode Black / 138

    +£0.00

    Sonder Zone [OEM]
    Sonder Zone 133 / Black

    +£34.99 +£29.99

    Sonder Zone [OEM]
    Sonder Zone 152 / Black

    +£34.99 +£29.99

    Sonder Kura [OEM]
    Sonder Kura

    +£47.99 +£34.99

    Seatpost

    Sonder Seatpost [OEM] /
    Sonder Seatpost / 31.6mm / 400mm

    +£0.00

    X-Fusion Manic Drop Seatpost and Lever
    X-Fusion Manic Drop Seatpost and Lever 31.6mm / 125mm

    +£119.99

    X-Fusion Manic Drop Seatpost and Lever
    X-Fusion Manic Drop Seatpost and Lever 31.6mm / 150mm

    +£119.99

    X-Fusion Manic Drop Seatpost and Lever
    X-Fusion Manic Drop Seatpost and Lever 31.6mm / 170mm

    +£119.99

    RockShox Reverb / 125mm Drop / 31.6 x 390mm
    RockShox Reverb / 125mm Drop / 31.6 x 390mm

    +£99.99 +£49.99

    RockShox Reverb / 150mm Drop / 31.6 x 440mm
    RockShox Reverb / 150mm Drop / 31.6 x 440mm

    +£174.99

    Sonder Ingot
    Sonder Ingot 31.6mm Inline

    +£179.99 +£124.99

    Sonder Ingot
    Sonder Ingot 31.6mm Layback

    +£179.99 +£124.99

    Cane Creek eeSilk [OEM]
    Cane Creek eeSilk 31.6mm / Alloy

    +£224.99 +£179.99

    Cane Creek eeSilk+ [OEM] / 31.6mm / Alloy
    Cane Creek eeSilk+ / 31.6mm / Alloy

    +£219.99 +£199.99

    Stem

    Sonder Piskie [OEM]
    Sonder Piskie 31.8mm / 35mm

    +£0.00

    Sonder Piskie [OEM]
    Sonder Piskie 31.8mm / 45mm

    +£0.00

    Sonder Piskie [OEM]
    Sonder Piskie 31.8mm / 55mm

    +£0.00

    sonder talo bike stem
    Sonder Talo 35

    +£44.99 +£34.99

    sonder talo bike stem
    Sonder Talo 45mm

    +£44.99 +£34.99

    Forks

    Rockshox Recon RL Silver / 100mm / 29
    Rockshox Recon RL Silver / 100mm / 29 100mm / 29

    +£0.00

    Rockshox Reba RL / 100mm / 29
    Rockshox Reba RL / 100mm / 29

    +£149.99

    sonder pathfinder rigid carbon 29er mountain bike fork triple bottle mount
    Sonder Pathfinder Black

    +£0.00

    Rockshox Sid Ultimate / 29 / 100mm
    Rockshox Sid Ultimate / 29 / 100mm

    +£649.99

    Tubes

    WTB [OEM] Inner Tube / 27.5 / 2.8-3.0
    WTB Inner Tube / 27.5 / 2.8-3.0

    +£0.00

    Tubeless Tyre Upgrade and Setup
    Tubeless Tyre Upgrade and Setup

    +£44.99

    Wheels

    Sonder Nova 27.5 [OEM] Wheelset / UK Build
    Sonder Nova 27.5 Wheelset / UK Build Microspline

    +£0.00

    Sonder Nova XC [OEM] Wheelset
    Sonder Nova XC Wheelset Shimano

    +£0.00

    Sonder Alpha 27.5 [OEM] Wheelset / UK Build
    Sonder Alpha 27.5 Wheelset / UK Build Microspline

    +£329.99 +£169.99

    Sonder Alpha 29 XC [OEM] Wheelset / UK Build
    Sonder Alpha 29 XC Wheelset / UK Build HG

    +£329.99 +£169.99

    Sonder Alpha 29 XC [OEM] Wheelset / UK Build
    Sonder Alpha 29 XC Wheelset / UK Build Microspline

    +£329.99 +£169.99

    Sonder Alpha 29 XC [OEM] Wheelset / UK Build
    Sonder Alpha 29 XC Wheelset / UK Build XD

    +£329.99 +£169.99

    3

    Select Accessories

    Edit

    Bottle Cages

    No Bottle Cages
    No Bottle Cages (none)

    +£0.00

    Sonder Buzz Wire
    Sonder Buzz Wire Single

    +£5.49 +£4.99

    Sonder Buzz Wire
    Sonder Buzz Wire Pair

    +£10.99 +£8.99

    love mud side blade side loading bottle cage left
    Sonder Sideblade Black / Left Entry

    +£6.99 +£5.99

    love mud side blade side loading bottle cage left and right
    Sonder Sideblade Black / PAIR

    +£9.99 +£7.99

    love mud side blade side loading bottle cage right
    Sonder Sideblade Black / Right Entry

    +£6.99 +£5.99

    Ti Wire Bottle Cage
    Ti Wire Bottle Cage Single

    +£44.99 +£34.99

    Ti Wire Bottle Cage
    Ti Wire Bottle Cage Pair

    +£79.99 +£79.99

    Lights

    No Lights
    No Lights (none)

    +£0.00

    Tau
    Tau Rear

    +£16.99 +£12.99

    Alpkit Phase 400 rechargeable bike light
    Phase 400

    +£24.99 +£19.99

    Alpkit Boson rechargeable bike light and hand torch
    Boson

    +£39.99 +£19.99

    Lights Accessories

    No Bike Light Accessories
    No Bike Light Accessories (none)

    +£0.00

    alpkit helmet mount bike light gps
    Helmet Mount Black

    +£7.99 +£4.99

    alpkit cockpit bike light gps mount
    Garmin Outfront Mount / Black

    +£24.99 +£15.99

    Mudguards

    No Mudguards
    No Mudguards (none)

    +£0.00

    sonder fender
    Sonder Fender Front MTB

    +£4.99 +£4.99

    Pedals

    No Pedals
    No Pedals (none)

    +£0.00

    Sonder Torque
    Sonder Torque Black

    +£39.99 +£29.99

    reko clipless bike pedal
    Sonder Reko

    +£59.99 +£50.99

    distortion flat mountain bike pedal
    Sonder Distortion

    +£54.99

    sonder slingshot clipless pedal
    Sonder Slingshot Black

    +£79.99 +£59.99

    sonder Jekyll clipless and flat hybrid pedal
    Sonder Jekyll Black

    +£79.99 +£59.99

    Initial Price

    Frontier SLX / Select a frame...
    £1,249.00

    Extras

    £0.00

    Total Price

    £1,249.00
    or from £54 /month
    Buy Now. Be Riding in 5 days.

    Frontier is our multi-activity hardtail mountain bike. Ride hard at the trail centre, load it up for a midweek bikepacking trip, pocket your passport and continue around the world. With full rack mounts at the back, Frontier is an adaptable off-road explorer.

    The geometry is for long day comfort but it’s no slouch.

    At a glance

    • Shimano SLX M7100 12-speed groupset
    • Rockshox Recon Silver RL fork
    • Sonder Nova 27.5 / 29" XC wheelset
    • 6061 aluminium frame

    The 6061 aluminium frame provides a durable and stiff chassis giving a responsive kick as you demand power when the slope steepens or enjoy feedback and precision through the corners.

    Available as a fully rigid or with 100mm suspension fork. Set it up for XC race speed or for all day big mile comfort.

    Tyre clearance gives you the choice of 27.5+ or 29in wheelsets. Bolt through 148mm boost rear spacing provides the benefit of stronger, stiffer and more efficient wheels.

    Why SLX?

    Shimano drivetrains are designed, engineered and manufactured to work as complete drivetrain systems. Shimano's new microspline hub means that you can run a 10 tooth cassette for a huge gear range. The new EV shifters and brakes provide loads of adjustment to get the perfect position as well as a rock-solid feel on the bars. And the 4-pot brakes provide consistent and reliable stopping power.

    Features

    Tuned for all-round capability

    Built for a balance of cross country efficiency and trail centre capability. A favourite with bikepackers looking for all-day comfort and performance.

    Light and clean

    Clean lines thanks to internal cable routing. Frontier also incorporates routing for a dropper seat post. The 6061 aluminium tubing is durable, light, low maintenance and stiff.

    Wider tyres. More grip.

    Extra width between the chainstays gives you the choice of running 27.5+ tyres up to 3 inches or 29 inch tyres up to 2.5 inches.

    Made for stronger wheels

    Designed around bolt through Boost 148mm rear spacing providing the benefit of stronger, stiffer and more efficient wheels.

    Wilderness trail features

    Chainstay mounted disc brakes. And triple bottle mounts.

    Build Spec
    Frameset
    Frame:Frontier Frame | 6061 aluminium
    Fork:RockShox Recon Silver RL | 100mm (travel)
    Headset:FSA Orbit C-40-ACB
    Groupset
    Shifters:Shimano SLX M7100 | 1x | 12-speed
    Brakes:Shimano SLX M7120 | Hydraulic | Post mount
    Rotors:Shimano RT66 | 180mm (front), 160mm (rear) | 6-bolt
    Rear derailleur:Shimano SLX M7100 | Long cage | 12-speed
    Chainset:Shimano SLX M7100 | 170mm | 32t
    Cassette:Shimano SLX M7100 | 10-51t | 12-speed
    Chain:Shimano SLX | 12-speed
    Bottom bracket:Shimano BB52 | BSA
    Wheelset
    Wheels:Sonder Nova 27.5" or 29 XC
    Tyres:Goodyear Escape Tubeless | Black | 27.5 X 2.6
    Tubes:WTB | 27.5 x 2.8-3.0"
    Finishing kit
    Handlebars:Sonder Aspect Riser | 780mm
    Stem:Sonder Piskie
    Seatpost:Sonder Seatpost | 31.6mm
    Saddle:Sonder Abode
    Grips:Sonder Clutch | Black
    Weight
    Frame:XS: TBC S: 1.84kg; M: 1.88kg; L: 1.94kg; XL: 2.08kg;
    Build:XS: TBC S: TBC M: TBC L: TBC XL: TBC
    Pedals not included with full builds
    Specifications are subject to change without notice
    Geometry and Sizing

    Sizing

    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:
    Small: 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 2in and over

    Size Small Medium Large X-Large
    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 445 445 445 445
    BB - BB drop 50 50 50 50
    FO - Fork offset 51 51 51 51
    WB - Wheelbase 1089 1127 1147 1174.5
    SO - Stand over 764 793 825 853
    RE - Reach 390 420 440 460
    SK - Stack 566 580 594 613
    Frame Spec

    Weight: S: 1.84kg; M: 1.88kg; L: 1.94kg; XL: 2.08kg
    6061 Aluminium frame
    Optimised for rigid or 100mm suspension forks
    Internal cable routing through downtube
    Bolt Through Boost 148mm rear spacing for wheel strength and optimal chainline
    Fork built around Bolt Through Boost 110mm spacing
    Threaded 73mm BSA BB shell for no-creak assembly
    Chainstay mounted disc brake for clean lines and damage protection
    Triple bottle cage mount on downtube
    Use a seat clamp with integrated mounts for pannier rack compatibility
    Clearance for 3 inch 27.5+ or 2.5 inch 29er tyres
    Reverb Stealth port
    Headset: IS42/28.6 | IS52/40
    EN 14766 compliant

    • Frontier SLX
    • Frontier SLX
    • Frontier SLX