Trail Bikes

What counts as a trail bike?

Trail bikes sit between cross-country and enduro. They typically have 120–150mm of front and rear travel, modern slack-ish geometry (64–66° head angle), and a balance of pedalling efficiency and descending capability. If you want one bike for everything from after-work loops to trail centre days and the odd uplift, this is the category.

How much travel do you need?

At the shorter end, 120–130mm bikes like the Transition Spur or Santa Cruz Tallboy feel closer to an XC bike — fast, light, and efficient. In the middle, 130–140mm bikes like the Specialized Stumpjumper or YT Jeffsy are the sweet spot for most UK riding. At 150mm you're overlapping with enduro bikes — machines like the Santa Cruz Hightower or Ibis Ripmo that can handle bigger terrain but still pedal well enough for full days out.

29er, 27.5, or mullet?

Most modern trail bikes run 29" wheels for the rollover speed and stability. A few brands still offer 27.5" for riders who prioritise agility and playfulness — particularly in sizes small and below where a 29" wheel can feel oversized. Mullet setups (29" front, 27.5" rear) split the difference and have become increasingly common on more aggressive trail bikes.

Carbon vs aluminium

Carbon frames are lighter and stiffer, but a used aluminium bike at the same price will often have a better spec — better fork, better brakes, better wheels. For trail riding, spec matters more than frame material. A carbon frame saves roughly 400–500g over alloy, which matters in a race but is barely noticeable on a Saturday ride. Buy the best spec you can afford.

What to look for buying used

Check suspension service history — a fork or shock that hasn't been serviced in two years will need work. Look at the bearings (headset, bottom bracket, pivots) by rocking the bike side to side. Inspect the frame around the shock mounts and chainstay for cracks or deep chips. Brake pads, chain wear, and cassette condition are easy to assess and tell you how the bike was maintained. Budget £100–200 for a basic service if the seller can't confirm recent work.

Popular trail bike brands

The most commonly listed trail bikes on Cranxs include the Specialized Stumpjumper, Trek Fuel EX, Santa Cruz Hightower and 5010, Canyon Spectral, YT Jeffsy, Orbea Occam, Yeti SB130, Nukeproof Reactor, and Orange Five. UK-made bikes from Bird, Cotic, and Whyte also come up regularly. Browse trail bike frames if you're building up, or check MTB components for upgrades.