Trek Top Fuel 9.9 XTR

The 2021 "Top Fuel 9.9 XTR" model from Trek is a high-quality mountain bike that stands out thanks to its first-class technical specifications and excellent components. The price for this model is 8,999 EUR.

The frame of the Top Fuel 9.9 XTR is made from OCLV Mountain Carbon, used for both the main frame and the seat stays. This frame features a tapered head tube, Knock Block, internal Control Freak cable routing and Carbon Armor. A magnesium pivot lever, Mino Link, ABP and Boost148 provide additional stability and flexibility. The frame offers 115 mm of travel. The maximum rider weight is 136 kg, whilst the bike itself weighs just 10 kg.

The front and rear brakes are Shimano XTR M9100 hydraulic disc brakes with Shimano RT86 discs (6-bolt mount) in sizes 160 mm and 180 mm. The shifter is a Shimano XTR M9100, 12-speed. The fork is a FOX Factory 34 Step-Cast with Float EVOL air spring and FIT4 damping, dual remote lockout, tapered steerer tube, Kashima coating and Boost110 with a 15 mm Kabolt axle and 120 mm travel.

The crankset consists of a Shimano XTR M9120 with an aluminium chainring (32 t.), Boost, a 52 mm chainline and a crank arm length of 175 mm. The PressFit bottom bracket is a Shimano MT500 with a 92 mm diameter. The cassette is a Shimano XTR M9100, 10–51T, 12-speed. The drivetrain is also a Shimano Dura-Ace/XTR M9100, 12-speed.

The handlebars are Bontrager Line Pro made from OCLV carbon, with a diameter of 35 mm, 15 mm rise and a width of 750 mm. The grips are Bontrager XR Trail Elite with aluminium clamps. The stem is a Bontrager Kovee Pro with a diameter of 35 mm, Knock Block, Blendr-compatible, a 13-degree angle and a length of 70 mm. The integrated headset features Knock Block with a 58-degree radius, cartridge bearings, and measures 1 1/8" at the top and 1.5" at the bottom.

The tyres are Bontrager XR3 Team Issue, Tubeless Ready with Inner Strength sidewall protection, an aramid bead core and a size of 29 x 2.40. The wheelset consists of Bontrager Kovee Pro 30 Carbon, tubeless-ready with Rapid Drive 108, a 6-hole disc mount and Boost 110 at the front and Boost 148 at the rear.

The saddle is a Bontrager Montrose Pro with carbon rails (7 x 10 mm) and a width of 138 mm. The seatpost is a Bontrager Line Elite Dropper with a 150 mm drop, internal cable routing, a diameter of 31.6 mm and a length of 440 mm. The saddle is clamped using a bolt-on mechanism with a diameter of 36.4 mm.

The packaging dimensions are 30 mm wide, 82 mm high and 159 mm long. The specific geometry values include a reach of 46 mm, a stack of 59 mm, a seat tube length of 44 mm, a top tube length of 61 mm, a head tube angle of 68 degrees, a seat tube angle also of 68 degrees, a head tube length of 9 mm, a chainstay length of 43 mm, a standover height of 74 mm and a wheelbase of 117 mm.

The Trek Top Fuel 9.9 XTR ML R is a technically advanced mountain bike that impresses with both its high-quality build and its comprehensive spec.