Mondraker Summum RR Mullet Mountain Bike 2026 - Downhill Full Suspension MTB

The Mondraker Summum RR Mullet combines 200mm Zero Suspension with a 200mm RockShox BoXXer Ultimate fork and mixed wheels. SRAM XX DH AXS 7-speed shifting, Maven Ultimate brakes and DT Swiss wheels complete a race-focused downhill build.Key Features:Stealth Evo 6061 alloy frame with 200mm Zero Suspension and Forward GeometryRockShox BoXXer Ultimate fork with Charger 3.2 RC2 damper and 200mm travelRockShox Vivid Coil Ultimate shock controls 200mm Zero Suspension travelSRAM XX DH AXS T-Type electronic 7-speed drivetrain with 10-24T cassetteSRAM Maven Ultimate four-piston brakes with 220mm/200mm HS2 rotors29/27.5in DT Swiss EX 1700 wheels with Maxxis Assegai and Minion DHR II tyresAdjustable headset provides +/-5mm reach adjustment to fine-tune bike fitAvailable with 0% APR financeThe Mondraker Summum RR Mullet is a downhill race bike developed around the demands of high-speed gravity riding. Its Stealth Evo 6061 aluminium frame combines 200mm of rear travel with Mondraker's Forward Geometry and a mixed-wheel layout, pairing a 29in front wheel with a 27.5in rear.For this generation, Mondraker has updated its Zero Suspension System kinematics. The revised design is intended to provide greater mid-stroke support while retaining supple initial suspension movement, helping the bike remain composed as the terrain becomes rougher and providing support deeper into its travel.The DH-specific Forward Geometry uses a longer reach and slack head angle, with its development influenced by Mondraker's downhill racing programme. An Onoff DH ARS headset adds another level of adjustment, with interchangeable cups providing +/-5mm of reach adjustment to help riders fine-tune fit and handling.The frame itself uses hydroformed Stealth Evo 6061 aluminium tubing, with tube profiles designed to balance stiffness and compliance. An alloy upper suspension link uses shock eyelet bearings, while the rear wheel is secured with a wide SuperBoost 12x157mm axle.Up front, the RockShox BoXXer Ultimate provides 200mm of travel. Its Charger 3.2 RC2 damper offers independent high and low-speed compression adjustment alongside rebound adjustment, while the DebonAir+ air spring allows pressure to be set for rider weight and preference.A RockShox Vivid Coil Ultimate shock controls the 200mm Zero Suspension System at the rear. The 225x75mm shock uses a coil spring with spring preload adjustment and the supplied specification lists linear rebound and medium compression settings.The mixed-wheel configuration uses a 29in front wheel to help carry momentum across rough sections, paired with a smaller 27.5in rear wheel. This combination also provides additional clearance around the rear of the bike when moving through steep terrain.DT Swiss EX 1700 Classic wheels use welded aluminium rims with a 30mm internal width and are tubeless ready. They're built around DT Swiss 350 hubs, including a 20x110mm Boost front and 12x157mm SuperBoost rear hub. The rear uses DT Swiss's 72-tooth Ratchet DEG system.Maxxis tyres are selected specifically for each end of the bike. A 29x2.5WT Assegai with 3C MaxxGrip compound and DH casing provides the front contact point, while a 27.5x2.5WT Minion DHR II uses 3C MaxxTerra compound and DH protection at the rear. Both tyres are tubeless ready.SRAM XX DH AXS provides wireless electronic shifting through a downhill-specific 7-speed drivetrain. The XX DH AXS T-Type rear derailleur is operated by an Eagle AXS Pod, with a compact 10-24T XS-797 cassette providing the gear range.The drivetrain is completed by SRAM XX DH T-Type 165mm cranks and a 36T direct-mount chainring. An E.13 Vario Compact chain guide combines an adjustable upper slider with a direct-mount bashguard and lower slider to help manage chain retention and protect the drivetrain on rough tracks.SRAM Maven Ultimate hydraulic disc brakes provide four-piston braking at both ends. A large 220mm HS2 rotor is fitted at the front, with a 200mm HS2 rotor at the rear. Steel-backed sintered pads are specified, while the Maven Ultimate levers include tool-free reach adjustment.Mondraker has also paid attention to durability and noise management. The frame uses unified bearing sizes across its pivot points, along with dedicated mounting hardware and rubber seals to help protect the bearings from dirt and moisture.Guided internal cable routing is designed to simplify cable installation while reducing unwanted movement and rattling inside the frame. Custom rubber protection covers the chainstay, downtube and bottom bracket areas to help reduce noise and protect against trail debris and impacts.Additional downtube protection is included for transporting the bike on chairlifts or loading it into a vehicle, adding useful protection for a bike designed to spend plenty of time travelling between downhill runs.An Onoff S9 DH CNC integrated stem offers adjustable 45-50mm length and is paired with an 800mm-wide Onoff S6 aluminium handlebar. Large and extra-large sizes receive a 38mm-rise bar, while the other sizes use a 25mm rise.An Onoff S3 DH alloy seatpost and Ergon SM10 DH saddle complete the downhill-specific finishing kit. At a stated 18.9kg, the complete build brings together long-travel RockShox suspension, electronic SRAM DH gearing, powerful brakes and a durable mixed-wheel setup for downhill racing and bike park riding.