Orange Mountain Bikes

Orange Mountain Bikes - ST4 SE Spec Sheet

From the 2012 Archive


The ST4 may take the name of the old, but it’s all new, a veritable conglomerate of design made to continue our own inimitable niche. The original brought responsive trail handling to a bike designed for regular XC. A low slung trail missile which pedaled efficiently and descended with a rapidity that astounded the most fervent critic. A bike that doesn’t fit a category, but creates one.

2010 Singletrack readers award winner

Built for all-day missions, the ST4 uses a low leverage ratio to produce 110mm of buttery smooth travel. Rather than use a shorter 165 mm shock the ST4 takes a lesson from the blood, running a 190mm custom tuned Fox RP23 shock to give 100mm perfectly controlled progressive travel driven through single pivot linkage actuated design. The geometry that made the original a classic, but updated to markedly stiffen the chassis laterally and incorporate linkage development from the Strange department.

If you want to redefine the rules of XC, the ST4 starts afresh. It might not fit the existing industry tags, but it’s built for the way most of us ride. Up, down and along, the ST4 is the remedy to your bike pondering woes. Just get on and ride, the ST4 does the rest.

Why the ST4 SE?

The ST4 SE puts the component package on a diet to create the ultimate XC dream machine. Light and fast but still with an onus on strength, this bike will sprint uphill without ever asking you to walk home. A little too much? Take a look at the ST4 Pro.

Read the reviews for the ST4...

Singletrack ST4 Test

Singletrack Issue 48

Dirt ST4 Test

Dirt - August 2008

ST4 SE Specifications

RRP £4,599.99
Sizes 16,18,20
Colour Chrome Grey
Tubeset 6061-T6 Reynolds Custom Butted Aluminium Tube
Rear Shock Fox Factory RP23 Kashima
Swing Arm QR Axle
Forks Fox 32 Float 120 Factory Fit RLC Kashima
Front Mech Shimano XTR
Rear Mech Shimano XTR Shadow 10sp (RDM985)
Shifters Shimano XTR R Fire +
Brakes Hope Race X2 Pro 160/160
Bottom Bracket Shimano SM51 Hollow Tech 2
Crankset Shimano XTR (3 x 10)
Cassette Shimano XTR CSM 980-10
Tyres Continental Rubber Queen 2.2 Black Chilli UST
Headset Hope
Stem Thomson X4
Handlebars Easton Haven Carbon Low
Saddle Fizik Gobi XM
Seat Post Thomson Elite
Seat Clamp
Pedals Flat Silver


ST4 Geometry
Moulded and Formed 6061-T6/Custom Butted Aluminium Tube
Frame Size 16" 18" 20"
A. Head Angle 68° 68° 68°
B. Seat Angle 74° 74° 74°
C. Top Tube 556 576 599
D. Effective TT 580 600 620
E. BB Height 329 329 329
F. Chainstay 425 425 425
G. Head Tube 120 120 140
H. Wheelbase1104 1125 1147
T. Rear Travel 110 110 110
Shock Length 190 190 190
Seat Tube Ø 27.2 27.2 27.2
Standover699 736 786
Unless otherwise indicated all measurements are in mm.
Frame angles are measured static, without rider sag.
Bottom bracket height measured from ground with 670mm ø tyre.
Fork and Ride Guide

Prices and Specifications are liable to change without notice.