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The Session AL frame set provides an incredible foundation for building your ideal downhill machine, with a new high-pivot suspension design.
The Session AL frame set provides an incredible foundation for building your ideal downhill machine, with a new high-pivot suspension design.
Trek

Trek Session AL MTB Frame Set in Deep Dark Blue to Alpine Blue Fade

£3,325.00
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Trek Session AL MTB Frame Set in Deep Dark Blue to Alpine Blue Fade

Season:2026

Brand:Trek

Code:37959BLU

The Session AL frame set provides an incredible foundation for building your ideal downhill machine.

The new high-pivot suspension design keeps you nimble, planted, and blazing-fast on even the most punishing runs. Its burly alloy construction handles gnarly and technical trails with ease.

This frame set is a great foundation for your dream downhill build. The new high-pivot suspension design delivers more traction, more speed, and virtually no pedal kickback.

It features a burly alloy frame and 200 mm rear travel with a Marzocchi Bomber coil shock, including a 226.7 kg spring. The FSA Orbit headset includes adjustable fixed-angle cups. It can be run with 29" wheels, 27.5" wheels, or even mullet style with a 29er in front and 27.5" at the back.

Features:

  • New suspension layout with a high pivot and idler pulley increases traction, carries more speed, and reduces pedal kickback for more stability.
  • Virtually zero pedal kickback means that you’ll stay confidently planted and in control during descents, especially when landing jumps or drops.
  • The high pivot design delivers a more efficient rearward axle path so you’ll carry more speed and your wheel won’t get hung up on obstacles.
  • The Marzocchi coil shock delivers a supple feel with minimal stiction and consistent performance on long, rowdy descents.
  • This new downhill sizing system is based on reach, not rider height, which is the most important factor in a great downhill bike fit.
Technical Information
  • Frame
    Alpha Platinum Aluminium, high main pivot, idler pulley, integrated frame protection, internal or external routing, magnesium rocker link, Mino Link, ISCG 05 2-bolt mount, Active Braking Pivot, 157x12 mm thru-axle, 200 mm travel
  • Shock
    R1: Marzocchi Bomber, 181 kg/400 lb spring, 250 mm x 72.5 mm; R2: Marzocchi Bomber, 204 kg/450 lb spring, 250 mm x 72.5 mm; R3: Marzocchi Bomber, 227 kg/500 lb spring, 250 mm x 72.5 mm
  • Max compatible fork travel
    200 mm
  • Skewer rear
    Bontrager Switch thru-axle, removable lever
  • Max tyre size
    Frame: 29x2.50", Fork: See manufacturer
  • Max. chainring size
    36T
  • Head set
    FSA Orbit, sealed cartridge bearing, 1-1/8" top, 1.5" bottom (includes geometry-adjust angled cups)
  • Rotor size
    Frame: 220 mm, Fork: see fork manufacturer
  • Weight
    R2 – 5.70 kg/12.57 lb
  • Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lbs).
Sizing Information
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