Trek Supercaliber SLR 9.9 XTR Gen 2 – Ultralight XC MTB 2025

Description

The Lightweight Benchmark: Trek Supercaliber SLR 9.9 XTR Gen 2 (2025)

The Trek Supercaliber SLR 9.9 XTR Gen 2 is the ultimate weapon for the cross-country purist. By pairing Trek’s lightest SLR OCLV Mountain Carbon frame with the legendary weight-savings of a mechanical Shimano XTR drivetrain, this bike offers an unmatched power-to-weight ratio. The Gen 2 chassis features the refined IsoStrut integrated shock, providing 80mm of rear travel with a structural design that eliminates the weight and flex of traditional suspension pivots.

Technical dominance is achieved through the full Shimano XTR M9100 groupset. Favored by professional racers for its tactile mechanical feel and “Hyperglide+” shifting, it allows for seamless gear changes under the most intense pedaling loads. The build is rounded out with Bontrager Kovee RSL Carbon wheels and a 110mm Fox Factory 34 Step-Cast Kashima fork, delivering a surgical ride quality that excels on World Cup-level technical climbs and descents.

SLR Engineering & Mechanical Perfection

The Supercaliber SLR 9.9 XTR stands apart as the definitive “Downcountry” racer for those who prefer mechanical precision over electronic shifting. The SLR-level carbon layup is specifically engineered to be thinner and stronger, shedding every unnecessary gram. With a dual remote lockout, the 9.9 XTR allows you to instantly switch between a plush 110mm/80mm setup and a rigid sprinting platform, making it a pro-level XC race bike without equal.

• SLR OCLV Mountain Carbon Frame: Trek’s flagship, highest-modulus carbon layup for the lightest race-day build.
• Full Shimano XTR Drivetrain: The gold standard in mechanical 12-speed shifting and lightweight braking.
• IsoStrut Integrated Shock: 80mm of structural rear travel for hardtail-like efficiency and full-suspension traction.
• Fox Factory Kashima Suspension: 110mm of front travel with genuine gold Kashima coating for ultra-smooth damping.
• Bontrager Kovee RSL Wheels: Pro-level OCLV Carbon rims with a 30mm internal width for elite tire support and speed.
• Carbon Cockpit: Includes a Bontrager RSL Integrated handlebar and stem to further reduce weight and increase stiffness.