After the success of the Stumpjumper EVO last year, Specialized has now released the very same bike but built around an alloy frame. It keeps everything we know and love about the original Stumpjumper EVO but its new alloy frame makes it more accessible than ever before.

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The new Stumpjumper EVO alloy gets the very same all-new design as it's carbon sibling. That includes the adjustable head angle, Specialized's fresh S sizing, and the SWAT integrated storage solution found in the downtube.

This bike runs 150mm of suspension at the front and that's the same at the front if you run an S1 frame. S2 to S6 gets a 10mm bump to 160mm. Just like the carbon bike, Specialized has put considerable effort into the Stumpjumper EVO Alloy's suspension kinematic, improving the pedalling performance while making it more agile, lively and more resistant to pedal bob, says the brand.

Specialized has approached geometry in a rather interesting way with the Stumpjumper EVO Alloy and has made use of the S-Sizing geometry which uses the bikes reach as a priority, rather than the seat tube length. While the seat tube does stretch throughout the size range, it only grows by 80mm across the size range, whereas the reach stretches from 410mm on the S1 up to 528mm on the S6.

This allows riders to pick their size more towards what they're looking for handling-wise with the longer bikes offering a more stable ride on the downs, while the bikes at the shorter end offering more agility.

On the subject of geometry, the Stumpjumper EVO Alloy comes with a 64.5° head angle, a 76.9° seat tube angle and a 441mm chainstay on an S4 frame. However, the bike's geometry is adjustable with six different settings that allow for 10mm of adjustment at the BB and two degrees of head angle adjustment.

All of this adjustment also allows the Stumpjumper EVO Alloy to be run with a 650b wheel at the rear, if you want to shift into full party mode.

Then, the bike comes built using Specialized's Rider-First Engineered frames that use a size-specific approach to ride characteristics that is said to ensure benchmark handling regardless of frame or rider size.

Finally, you'll find SWAT storage in the downtube of the Stumpjumper EVO Alloy which now gets even more space, offering enough room to carry spares, a jacket and the brand has added a SWAT bladder, giving you an extra 650ml of fluid storage. 

The Stumpjumper EVO Alloy is available in two builds with the Elite model being built with a Fox Float 36 Factory fork and a Float X Factory shock. Then, there's a SRAM GX Eagle drivetrain with SRAM Code RS four-pot brakes and the bike rolls on a pair of Roval wheels wrapped with a Butcher GRID TRAIL gripton T9 29x2.3" tyre at the front and an Eliminator GRID TRAIL GRIPTON T7 29x2.3" at the rear.

Wrapping this build up is a OneUp Components Dropper Post V2 with 120mm of drop on the S1 size. S2 and S3 get 150mm of drop, S4 gets 180mm and S5 and S6 get 210mm.

The Comp build gets a Fox Float 36 Rhythm fork with a Float X Performance shock and it runs a SRAM NX Eagle drivetrain with SRAM Code R four-pot brakes. This bike gets Specialized's own wheels with the same tyres and there's an X-Fusion Manic dropper.

The brand new Specialized Stumpjumper EVO Alloy Elite will set you back £4,500 while the Comp is priced at £3,250.

• www.specializedconceptstore.co.uk

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