The Trek Supercaliber SLR 9.8 XT Di2 Gen 2 is a purpose-built cross-country race machine wrapped in the striking Marble Carbon Smoke colourway, combining Trek’s lightest SLR OCLV Mountain Carbon frame with Shimano’s electronically controlled XT Di2 drivetrain. Designed for serious XC racers and dedicated trail riders who demand the absolute best in lightweight performance, this is a bike engineered to win.

Who Is the Trek Supercaliber SLR 9.8 XT Di2 Gen 2 Built For?

This bike is built for the competitive cross-country rider and XC enthusiast who needs a race-proven, full-suspension platform that keeps pace with the most demanding UCI-style courses. Whether you are chasing podiums at club level or pushing hard on rowdy singletrack, the Supercaliber SLR 9.8 XT Di2 Gen 2 rewards aggressive, technically skilled riders who refuse to compromise on weight, stiffness, or suspension capability.

How the Trek Supercaliber SLR 9.8 XT Di2 Gen 2 Performs on the Trail

At the heart of the Trek Supercaliber SLR 9.8 XT Di2 Gen 2 is the updated second-generation SLR OCLV Mountain Carbon frame, built with a high-modulus layup that is 200 to 250 grams lighter than its predecessor. The IsoStrut suspension system, developed in collaboration with RockShox, integrates the SIDLuxe shock deep within the frame structure, making it a functional part of the chassis itself. The result is 80mm of precisely controlled rear travel that pedals with exceptional efficiency, eliminating the bob and energy loss that plagued earlier generation XC bikes. Combined with the Fox Factory 34 SL fork running 110mm of travel up front, the Supercaliber SLR 9.8 XT Di2 Gen 2 handles increasingly technical XC courses without ever feeling hesitant or vague beneath you.

Shimano’s XT Di2 electronic shifting brings a new level of precision to cross-country racing. The M8250 rear derailleur executes crisp, repeatable gear changes under full power output, so you never miss a beat on a steep climb or a sprint to the finish. The 12-speed 10-51T cassette paired with the e*thirteen Helix Race Carbon crank gives you a wide gear range to tackle any gradient South African XC trails and race venues can throw at you. Bontrager Kovee Elite 30 OCLV Mountain Carbon wheels keep rotating weight to a minimum while maintaining the stiffness needed for explosive acceleration, and the Maxxis Aspen tyres in 29×2.4-inch provide excellent tubeless-ready rolling speed with reliable cornering grip. Riders who prefer shopping with a local specialist can browse the full Trek range at Enduroplanet, South Africa’s dedicated cycling destination.

The updated Gen 2 geometry reflects the evolving demands of modern XC racing. The 67.5-degree head angle, 435mm chainstays, and a 10mm longer reach compared to the first generation create a balanced, confident handling character that inspires trust on technical descents without adding sluggishness on the climbs. The steeper effective seat tube angle of 74.5 degrees keeps you positioned efficiently over the pedals, reducing fatigue over race distances. The Bontrager Line Elite Dropper seatpost adds genuine descending capability, letting you drop your saddle on rowdy sections for increased control without stopping to adjust manually. At just over 11kg in race trim, the Trek Supercaliber SLR 9.8 XT Di2 Gen 2 sits in a class of bikes that can genuinely be described as weapons for the cross-country racer.

5 Reasons You’ll Want the Trek Supercaliber SLR 9.8 XT Di2 Gen 2

• Race-ready electronic precision: Shimano XT Di2 M8250 12-speed electronic shifting delivers instant, reliable gear changes under maximum load, so your focus stays on the race and not the drivetrain.
• Ultralight SLR carbon frame: The high-modulus SLR OCLV Mountain Carbon layup is 200 to 250 grams lighter than the previous generation, giving you a noticeably quicker, more responsive ride without sacrificing torsional stiffness.
• Suspension tuned for XC efficiency: The IsoStrut system with RockShox SIDLuxe delivers 80mm of rear travel that actively resists pedalling losses, keeping your power transfer clean on climbs while absorbing the hits that would otherwise slow you down on rough terrain.
• Full carbon wheels and cockpit: Bontrager Kovee Elite 30 OCLV Mountain Carbon wheels paired with the RSL integrated carbon bar and stem reduce overall system weight and sharpen steering response for maximum confidence at race pace.
• Modern geometry with a dropper post: The updated 67.5-degree head angle and the Bontrager Line Elite Dropper seatpost transform technical descents from a liability into a strength, giving you the confidence to attack faster, more demanding XC course features.