Get ready to dominate the downhill with the 2026 Mondraker Summum S Mullet DH Bike in Nimbus Grey – a purebred race machine designed for maximum speed, precision handling, and full-send confidence. Whether you're chasing podiums or smashing bike park laps, the Summum S Mullet delivers unbeatable control and performance, engineered for the steepest and roughest trails.
Mullet Setup for Maximum Speed & Agility
The MX mullet design (29" front, 27.5" rear) strikes the perfect balance of rollover speed and nimble handling, allowing you to plough through technical terrain while keeping the back end agile for tight corners and big whips.
Race-Proven Alloy Frame
Built around Mondraker’s hydroformed 6061 Alloy Stealth Evo frame with Zero Suspension System, you get 200mm of progressive rear travel, Forward Geometry for unmatched stability, and SuperBoost spacing for added strength and stiffness. Internal cable routing keeps things clean, while MAX capacity Enduro bearings ensure long-lasting performance in the harshest conditions.
RockShox Suspension Combo
Tuned for downhill domination, the RockShox Boxxer Select RC 29 fork and Vivid Coil Select R rear shock soak up everything from rock gardens to big drops. With adjustable rebound, compression, and coil preload, you can dial in your perfect setup for any track.
Downhill-Specific Components
Sram DB8 4-piston brakes with oversized 220mm / 203mm rotors for maximum stopping power
Sram GX DH 7-speed drivetrain built to take a beating
Mavic Deemax BikePark wheels wrapped in Maxxis Assegai & DHR II tubeless-ready DH tires with 3C MaxxGrip compound
Onoff cockpit featuring 800mm alloy bars and adjustable DH stem
Ergon SM10 DH saddle for all-day comfort and control
Geometry That Adapts to You
With optional geometry adjustment cups (+/-1º / +/-2º headset options), you can fine-tune the Summum to your riding style – whether you're chasing milliseconds on race day or pushing limits on your home trails.
Key Specifications at a Glance
Frame: 6061 Alloy Stealth Evo, Zero Suspension, 200mm travel
Fork: RockShox Boxxer Select RC 29, 200mm
Shock: RockShox Vivid Coil Select R
Brakes: Sram DB8 4-piston, 220/203mm rotors
Drivetrain: Sram GX DH 7-Speed
Wheels: Mavic Deemax BikePark
Tyres: Maxxis Assegai (Front) / DHR II (Rear)
Colour: Nimbus Grey
Sizes: S / M / L / XL
Why Buy from The Rolling Fix?
Based in Liverpool, The Rolling Fix is your go-to MTB specialist. We offer expert advice, premium bike builds, and after-sales support that keeps you riding longer and harder. Get the 2026 Mondraker Summum S Mullet in Nimbus Grey today and take your downhill game to the next level.
Order online or visit us in-store at The Rolling Fix – where speed meets service.
Need help choosing the right size or setting up your suspension? Our in-house tech team is here to help.
Specification
Frame: Summum MX 6061 Alloy Stealth Evo, Mullet, hydroformed tubing, Zero suspension system, 200mm travel, Forward Geometry, alloy upper link with shock eyelet bearings, SuperBoost 12x157mm rear axle, 83mm BSA bottom bracket, MAX. capacity dual row Enduro bearings, HHG internal cable routing, ISCG 05. *Optional Geometry kit
Sizes: S / M / L / XL MX
Rear shock: Rock Shox Vivid Coil Select R, 225x70mm. Rebound adjustable, HBO adjust and spring preload. Trunnion top mount, 30x8mm bottom bushings
Shock settings: C40 compression, R55 rebound. Spring rate: S size 400 lbs, M size 450 lbs, L size 500 lbs, XL size 500 lbs
Fork: Rockshox Boxxer Select RC 29, 200mm, DebonAir+, 1-1/8†steerer tube, Boost 20x110mm axle, offset 52mm. Settings: low-speed compression, rebound, air preload
Headset: Onoff ZS56/ZS56, 1-1/8", 1-1/8" steerer tube, 42x30x7x45ºx45º ACB sealed bearings, geometry kit cups, external diameter 62mm
Stem: Onoff S9 DH CNC Integrated, 45-50mm adjustable length, 10mm rise, 31.8mm barbore, 7075 alloy, 2x6mm spacer
Handlebar: Onoff S6 1.0 7075 alloy, rise: 25mm, width: 800mm, 8º backsweep, 5º upsweep, 31.8mm barbore. L and XL size: 1.5 rise.
Grips: Onoff Desert Pro, CNC lock-on, 135mm. L and XL: Thicker size
Seatpost: Onoff S3 DH Alloy, diameter 31.6mm, length 300mm
Saddle: Ergon SM10 DH Black
Front brake: Sram DB8, oversized 4-piston caliper, Centerline 220mm IS 6 bolts one-piece rotor, steel-backed metal sintered pads
Rear brake: Sram DB8, oversized 4-piston caliper, Centerline 203mm IS 6 bolts one-piece rotor, steel-backed metal sintered pads
Brake lever: Sram DB8, tool reach adjust, lever pivot bushings
Rims: Mavic Deemax BikePark 29, 30mm internal width, 32 holes
Spokes: Mavic 32 steel flat spokes
Front hub: Mavic Boost 20x110mm, IS 6 bolts
Rear hub: Mavic 12x157mm, ID360 freewheel, sealed bearings, IS 6 bolts, HG freehub
Front tire: Maxxis Assegai 29x2.5WT, tubeless ready, 3C MAXX GRIP compound, DH casing, 60x2TPI, folding bead
Rear tire: Maxxis DHR II 27''5x2.5 WT, tubeless ready, 3C MAXX GRIP compound, DH casing, 60x2TPI, folding bead
Crankset: Sram Truvativ Descendant DH, DUB axle, Direct mount chain ring, 165mm CL 56´5
Rings: 34T, steel, X-SYNC
Bottom bracket: Sram DUB BSA, sealed bearings, 83mm
Chain: Sram PC1110 11s, Powerlock
Front derrailleur: E.13 Vario Compact Upper Slider ,Alloy backplate ,DMB (Direct mount Bashguard) Lower Slider 34-36t, ISCG 05 adjustable upper slider
Rear derrailleur: Sram GX DH, 7s, medium cage
Shift levers: Sram trigger GX DH 7s, X-actuation 1:1
Casette: Sram PG 720 11-25T, 7s
Derailleur hanger: Mondraker M068
Others: *Optional geometry kit: +-1º / +-2º headset cups