The Helion is billed as an “aggressive cross-country bike” courtesy of some burlier spec choices and lower, slacker and longer than average (for XC) geometry. Sounds good, right? We hit the hills to see how it behaved.
At the Helion’s heart sits GT’s Independent Drivetrain Angle Optimised Suspension system with its high main pivot and meaty Path Link. This rocker arm compresses the shock, houses the BB – in theory helping to isolate pedalling forces – and connects the front and rear triangles.
Classy spec sheet
Fox’s latest DPS rear shock – albeit in cheaper Performance, not top-end Factory, guise – burrows its way through the split seat tube of the carbon front triangle. A bar-mounted remote lets you toggle through its three modes and control the 110mm (4.3in) of rear travel. Cables are routed externally, with things getting a little busy above the BB area.
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GT’s floating BB ‘AOS’ design is meant to isolate the suspension from pedalling forces
Our medium frame had a 69.5-degree head angle, 606mm effective top tube and 440mm chainstays, and the BB stood 330mm off of the floor.
Singletrack slayer
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