The Altitude is probably the most UK-relevant bike in Rocky Mountain’s line-up. With 150mm of travel out back and 160mm at the front, it’s meant to be a do-it-all, do-it-anywhere sort of bike, prime for singletrack shredding and big-mountain adventures.
- First look: the all-new 2018 carbon Kona Process
- Best mountain bike: how to choose the right one for you
A full-carbon frame helps keep weight to a competitive 12.6kg (large). It’s constructed using rigid internal moulds and specific carbon/resin mixes and lay-ups for each tube. The four-bar linkage layout gives Rocky Mountain plenty of control over the suspension curve, and the Fox shock gets a different tune on each frame size (lighter tunes for smaller riders).
One particularly interesting frame feature is the ‘RIDE-9’ geometry adjustment system. Nine different settings can be accessed via two interlocking chips on the swing link, from ‘Slack’ (65-degree head angle) to ‘Steep’ (66.1 degrees).
Changing between them is a simple case of removing a bolt and flipping the chips. Other key geometry numbers (on the large size, in the ‘Slack’ setting) include a reach of 452mm, a bottom bracket drop of 13mm, short 426mm chainstays, a 74-degree seat angle and a pretty average 1,206mm wheelbase.
Rocky Mountain Altitude Carbon 70 kit
Fox take care of damping duties with a ‘Performance Elite’ spec 36 Float fork with FIT4 damper up front and a matching DPS EVOL rear shock. There’s no slippery Kashima coating, but everything else you’d want from Fox is there.
The drivetrain is based around Shimano’s 11-speed XT group, with Race Face Turbine Cinch cranks. Shimano bring it all to a halt too, with XT stoppers.
Rocky Mountain Altitude Carbon 70 ride impression
Rocky Mountain Altitude Carbon 70 specifications
- Frame: ‘Smoothwall’ carbon fibre, 150mm (5.9in) travel
- Fork: Fox 36 Float EVOL FIT4 Performance Elite, 160mm (6.3in) travel
- Shock: Fox Float DPS EVOL Performance Elite
- Drivetrain: Shimano Deore XT with Race Face Turbine Cinch cranks (1×11)
- Rims: Stan’s NoTubes Flow MK3
- Hubs: Rocky Mountain Boost (f) and DT Swiss 370 Boost (r)
- Tyres: Maxxis Minion DHF WT 3C 27.5×2.5in (f) and Minion DHR II WT 3C 27.5×2.4in
- Brakes: Shimano Deore XT, 180mm rotors
- Handlebar: Race Face Turbine, 780mm
- Stem: Rocky Mountain 35 AM, 35mm
- Seatpost: Fox Transfer dropper
- Saddle: WTB Silverado Race
- Weight: 12.6kg (27.8lb), large size without pedals
You can read more at BikeRadar.com