BOMBTRACK Cale AL Advent X - Matt Purple

The Bombtrack Cale AL Advent X is a modern aluminium hardtail designed for trail riding, aggressive bikepacking and demanding alpine loops. A 6061-T6 hydro-formed frame, 130 mm RockShox suspension fork and 29" tubeless-ready wheels make it a solid, confidence-inspiring and surprisingly versatile partner – from weekday trail sessions to long mountain adventures.

• 6061-T6 hydro-formed aluminium frame with Boost spacing, rack and fender mounts, stealth dropper routing and a 73 mm BSA bottom bracket shell.
• RockShox 35 Silver R, 130 mm travel with 35 mm stanchions for extra stiffness and control on technical terrain.
• Microshift Advent X 1x10 drivetrain with 28 T chainring and 11–48 T cassette for low climbing gears on steep and loose climbs.
• Tektro Orion 4-piston hydraulic disc brakes with 203/180 mm rotors for powerful, consistent braking on long descents.
• WTB ST i29 29" rims with Kenda Hellcat Pro 29" x 2.4" tubeless-ready tyres, ready for roots, rocks and rough trail surfaces.
• Matt Purple finish with a clean yet distinctive look that fits perfectly into the Bombtrack trail & adventure universe.

Within the Cale family, the AL Advent X is the ideal entry point into Bombtrack’s trail world: it keeps the progressive geometry and “mountain adventure” attitude of the range but combines it with an accessible and robust aluminium frame that is ready to be loaded with bags, racks and all your bikepacking kit.

Performance & Ideal Terrain

With a slack head angle, 130 mm fork and 29" wheels, the Cale AL Advent X is built for all-round trail use: stable on descents, composed on steep sections and still efficient enough for long climbs thanks to the 1x drivetrain and centred riding position.

On-road & off-road behaviour

• Climbing & transfers: the aluminium frame and wide 28 / 11–48 T gearing make long, steep climbs manageable, even when fully loaded.
• Technical trail riding: the 130 mm fork, 35 mm stanchions and 2.4" tyres deliver traction and control through rock gardens, roots and rough singletrack.
• Rugged commuting: add fenders and a rear rack and you get a “do-it-all” machine for broken tarmac, cobbles and gravel service roads.

Best use cases

• Alpine and hilly trails with technical sections.
• Off-road bikepacking and multi-day micro-adventures.
• Light bike park use, trail centres and all-mountain loops with plenty of elevation.
• Mixed city–gravel riding if you want one tough, dependable bike.

Recommended setups

• Trail / All-Mountain: keep the Kenda Hellcat Pro 29" x 2.4" tyres set up tubeless, run moderate to low pressures, combine with the Seido Waypoint flat bar and short Chase stem for maximum control on descents.
• Bikepacking & Adventure: use the mounting points on down tube, top tube and rear triangle for frame bags, cages and racks. Consider slightly faster-rolling tyres if your routes mix hardpack, forest roads and tarmac.
• All-weather workhorse: fit full fenders and a rear rack; the 2.4" tyres ensure comfort and grip on wet roads and muddy tracks.

Independent Opinions & Press Highlights

• Specialist MTB outlets and spec databases consistently describe the Cale AL Advent X as a trail-ready aluminium hardtail with a high-value build, offering a very complete package at a sensible price point.
• Reviewers often praise its long, stable geometry derived from Bombtrack’s adventure and bikepacking experience, which makes the bike confidence inspiring on descents without feeling dull or sluggish when you point it uphill.
• The combination of a 4-piston brake set and wide-range Advent X drivetrain is frequently highlighted as a real-world advantage for riders who tackle long descents and sustained, technical climbs on loose terrain.
• WTB ST i29 rims and 2.4" tubeless-ready tyres are commonly seen as a smart choice for riders wanting one bike that can do trail centres, alpine tours and demanding bikepacking trips, balancing rolling speed, comfort and grip.

Bombtrack Cale AL Advent X – Size Guide

The height recommendations above are intended as general guidelines to help narrow down your options. Proper bike fitting is more complex and should also take into account inseam, torso and arm length, flexibility and riding style.

Because no two riders are exactly the same, it is impossible to provide advice that works perfectly for everyone. The best way to find your ideal size is to consult your local Bombtrack dealer or a professional bike fitter.

Bikejamming Size & Setup Support

Unsure between two sizes or not sure how to set up the bike for trail use, bikepacking or mixed riding? Drop us a line at info@bikejamming.it and tell us how and where you ride: we’ll help you choose the right size, dial in your setup and suggest potential upgrades based on real-world use.

Think Bigger, Ride Further

The Bombtrack Cale AL Advent X – Matt Purple is the right choice if you want a hardtail that can jump from technical trail rides to demanding bikepacking trips, with a robust aluminium frame, 130 mm fork and a ready-to-ride build straight out of the box.

Not sure if it’s the perfect match for you, which size to pick or how to tune it to your riding style? Get in touch at info@bikejamming.it or contact us directly through Bikejamming: we can advise you on tyres, cockpit choices, dropper posts, wheel upgrades and luggage solutions to turn your Cale AL Advent X into the ultimate adventure hardtail.

Ready to leave the usual routes behind? Configure your Cale AL Advent X now and point it towards the nearest piece of singletrack.

Technical Specifications – Bombtrack Cale AL Advent X

Frame Standards & Geometry

Frame & Component Standards

Geometry (29" wheels)

¹ Size recommendations based on rider height are indicative guidelines only and should not replace a professional bike fit.
² Values refer to the standard factory build.