the Cale AL

An expedition-ready hardtail

"With raucous off-road ability and a Sherpa-like carrying capacity, it’s ready for expeditions in the high mountains."

Introducing the Cale AL

An aluminium sibling for our most trail-capable bike. A few tweaks and a new lightweight aluminium frame see the latest Cale AL ready to take on any track. With raucous off-road ability and a Sherpa-like carrying capacity, it’s ready for expeditions in the high mountains. Equally at home smashing around your local trail centre, it comes with fast-rolling 29-inch wheels, but will also work with oversize 27.5+ tyres. Equipped with a dropper post and tough suspension fork, it’s mountain-ready out of the box.


    • New aluminium version of the Cale trail mtb with hydroformed triple butted tubing.
    • * Rockshox 35 Gold RL 130 mm travel suspension fork with Boost spacing and 35 mm stanchions.
    • * Bombtrack Illusion 35 mm oversized handlebar, 800 mm wide and Bombtrack Chase stem with 40 mm extension.
    • * WTB ST i29 TCS 2.0” tubeless ready rims.
    • * Bombtrack GRAD Boost disc brake hubs with 15 and 12 mm through axles.
    • * Kenda Hellcat Pro ATC 29 x 2.4” tubeless ready tires.
    • * Sram SX Eagle 12-speed drivetrain with 11 – 50 T cassette and 30 T direct mount chainring.
    • * Sram Level hydraulic disc brakes.
    • * KS E30i 30.9 mm dropper post with 150 mm travel.



    Color 1 Matt Hazy Green
    Color 2 -
    Frame 6061-T6 hydro-formed Aluminium, TA,rack / fender mounts, boost spacing,stealth dropper ready, 73 mm BSA BB shell
    Fork ROCKSHOX 35 GOLD RL suspension fork, 130 mm travel, 1.1/2" - 1.1/8"
    Handlebar BOMBTRACK ILLUSION flat bar, aluminium, 35 mm clamping diameter
    Grips BOMBTRACK RETURN 135 mm grips
    Stem BOMBTRACK CHASE aluminium stem, 35 mm clamping diameter
    Headset Sealed integrated aheadset, 1.1/2'' - 1.1/8''
    Levers SRAM LEVEL hydraulic
    Shifter SRAM SX-EAGLE 12-speed trigger shifter
    Brakes SRAM LEVEL hydraulic disc brakes with 180 mm F / 160 mm R rotors
    Crankset TRUVATIV STYLO 6K aluminium crank, Boost DUB
    BB SRAM DUB BSA 73 mm
    Pedals -
    Chain SRAM NX EAGLE chain, 1/2'' x 11/128'', 118L
    Chainring SRAM EAGLE X-SYNC 2, narrow-wide, 30 T
    Cassette SRAM PG-1210 EAGLE 12-speed, 11 - 50 T
    Front derailleur -
    Rear derailleur SRAM SX EAGLE, clutch, long cage
    Front hub BOMBTRACK GRAD sealed hub, 6-bolt disc, 15 x 110 mm thru-axle
    Rear hub BOMBTRACK GRAD sealed hub, XD driver, 6-bolt disc,12 x 148 mm thru-axle
    Front rim WTB ST i29 double wall, TCS 2.0, 32h
    Rear rim WTB ST i29 double wall, TCS 2.0, 32h
    Saddle BOMBTRACK ORIGIN saddle
    Seat post KS E30i dropper seatpost, 30.9 mm, 150 mm travel, 485 mm length
    Seat clamp BOMBTRACK ORIGIN forged aluminium seat clamp, 34.9 mm
    Front tire KENDA HELLCAT PRO ATC 29 x 2.4" TLR, tubeless ready
    Rear tire KENDA HELLCAT PRO ATC 29 x 2.4" TLR, tubeless ready
    Fender -
    Rack -
    Light -
    Weight 13.8 kg (size M)
    Weight frame 2100 g (size L, incl. TA, hanger)
    Maximum rider weight 140 kg incl. luggage
    ASTM riding condition 4

    BB Standard BSA - 73 mm shell width
    Headset Standard (S.H.I.S.) IS42 / 28.6 | IS52 / 40
    Fork Max Tire Clearance w/o fender 27.5'' x 2.8'' / 29'' x 2.5''
    Frame Max Tire Clearance w/o fender 27.5'' x 2.8'' / 29'' x 2.4''
    Maximum chainring clearance 1x 34 T with 52 mm chainline
    Maximum chainring clearance 2x -
    Seat Post Diameter 30.9 mm
    Seat clamp diameter 34.9 mm
    Brake mount front PM
    Brake mount rear PM
    Maximum rotor clearance front 220 mm
    Maximum rotor clearance rear 180 mm
    Front through axle 15 mm x 110 mm, 1.5 TPI
    Rear through axle 12 mm x 148 mm, 1.5 TPI
    Derailleur hanger BT-DH-023
    ISO testing standard MTB
    Crankarm M 170 mm / L 175 mm
    Q Factor 172 mm
    BCD crank direct mount (Sram compatible)
    Chainline 52 mm
    Spoke length front wheel tba
    Spoke length rear wheel tba
    Spoke count (front / rear) 32 / 32
    ERD 606 mm
    Front hub PCD 58 mm
    Rear hub PCD 58 mm
    Stem Length 40 mm
    Stem angle
    Headset Spacers 1 x 10 mm, 2 x 5 mm
    Seat post offset 0 mm
    Seat post length 485 mm, 150 mm travel

    Bike Size M L
    Wheel size 29'' 29''
    Seat Tube Length 430 460
    Horizontal TT length 630 655
    Seat Angle 74.0° 73.5°
    Head Angle 67.5° 67.5°
    Headtube Length 120 130
    BB Drop 55 55
    Chainstay Length 440 440
    Fork Offset 44 44
    Trail 107 107
    Wheelbase Length 1171 1191
    Standover 789 808
    Reach 452 466
    Stack 624 633
    Front Center 737 757
    Axle to Crown (with 25% sag) 513 513
    Minimum rider height * 1700 1790
    Maximum rider height * 1810 1900

    * Our bike size recommendation generally represents a rough guideline for quickly narrowing down the sizes from which to choose based on the body height. Bike fitting is a complex topic and other measurements and factors have to be accounted for as well. Since no two human bodys are exactly the same it is not possible to give a 100% correct advice for everyone. Therefore BOMBTRACK cannot guarantee for the stated recommendations to be correct for every individual customer. The best way to work out the correct size is to consult a local BOMBTRACK dealer or a professional bike fitter and have them determine the needed size.


    Bike Size M L
    Handlebar type Flatbar Flatbar
    Width (drops) - -
    Width (barends) 800 800
    Reach - -
    Flare - -
    Drop - -
    Rise 18 18

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