Giant Reign SX Mountain Bike 2026 – Enduro Full Suspension MTB

The Reign SX is a gravity-focused enduro bike designed for hard riding on steep, rough terrain. With long-travel suspension, adjustable geometry and a mullet wheel setup, it delivers control and confidence when trails get fast and demanding.Key Features:Frame: ALUXX SL aluminium frame with enduro geometry, flip chip and 165mm Maestro travelFork: RockShox BoXXer fork with 190mm travel and Charger 3 RC damperRear Shock: RockShox Vivid Base rear shock with 165mm of rear wheel travelDrivetrain: microSHIFT Advent X 1×10 drivetrain with wide-range cassetteBrakes: TRP EVO DH-R hydraulic disc brakes with 220/200mm rotorsWheels: Mullet setup with 29” front and 27.5” rear Maxxis Assegai tyresStandout: Adjustable geometry and wheel size via Flip Chip Maestro 3 systemFinance: Available with 0% APR financeThe Giant Reign SX is built for riders who prioritise descending performance and control on the roughest trails. The ALUXX SL aluminium frame uses Giant’s high-strength alloy and advanced welding techniques to deliver durability and stiffness where it matters, without unnecessary weight. Integrated downtube storage adds practicality for tools or spares on longer days out.Maestro suspension provides 165mm of active rear travel, designed to stay sensitive under braking and stable when pushing hard through rough sections. The trunnion-mounted RockShox Vivid Base shock offers a longer stroke than previous versions, improving small-bump performance and consistency on repeated hits.Up front, the RockShox BoXXer fork delivers 190mm of controlled travel, giving the Reign SX a confident front end for steep chutes, drops and high-speed impacts. The long-travel setup is balanced by a mixed wheel size configuration, with a 29” front wheel for rollover and stability, and a 27.5” rear wheel for quicker direction changes and easier movement through tight sections.Flip Chip Maestro 3 adjustment lets you fine-tune the bike’s geometry to suit terrain and riding style. Riders can switch between settings to alter head angle, seat angle and bottom bracket height, helping adapt the bike for bike park laps, steep enduro stages or rough natural trails.The microSHIFT Advent X drivetrain keeps things simple and robust, offering a wide 11–48T gear range that suits steep climbs without adding complexity. TRP EVO DH-R brakes provide strong, consistent braking with large rotors for control on long, sustained descents.Finished with wide Giant TRA 2 rims and Maxxis Assegai tyres front and rear, the Reign SX is set up for grip, support and reliability. It’s a purpose-built enduro machine for riders who want confidence and composure when the trail points straight down.