Mondraker Summum RR Mullet 2026 Downhill Bike - Blue / Black / Silver
Race-Bred Downhill Speed with Full Mullet Setup
The Mondraker Summum RR Mullet 2026 is built for riders who want a full-gas downhill bike with proper race pedigree. With 200mm front and rear travel, a mullet wheel setup and Mondraker’s updated Zero Suspension System, it is designed for steep tracks, bike park laps and hard-hitting downhill riding where stability and speed matter most.
This is a bike built from Mondraker’s World Cup downhill development, and it shows. The updated kinematics give better mid-stroke support and improved suppleness off the top, while the mullet setup keeps the front end planted and the rear end more agile through tighter turns and rough sections.
Key Features
- Summum MX 6061 Alloy Stealth Evo frame
- Updated Zero Suspension System
- 200mm rear travel
- RockShox Boxxer Ultimate 29 fork, 200mm travel
- RockShox Vivid Coil Ultimate rear shock
- SRAM XX DH AXS T-Type 7-speed drivetrain
- SRAM Maven Ultimate 4-piston brakes
- DT Swiss EX1700 Classic wheelset
- Mullet setup with 29in front and 27.5in rear
- 27 possible geometry adjustment options
- Adjustable reach headset cups, flip chip and adjustable rear dropouts
Why It Stands Out
The Summum RR Mullet is all about going fast downhill without compromise. It takes everything Mondraker has learned from downhill racing and puts it into a bike that is built to stay composed when tracks get steep, rough and properly blown out.
One of the biggest highlights is how adjustable it is. Mondraker has built in reach adjustment, bottom bracket and angle adjustment through the lower shock mount flip chip, and chainstay adjustment through the rear dropout system. That makes it much easier to fine-tune the bike for different tracks and riding styles.
Specifications
| Category | Specification |
|---|---|
| Model | Mondraker Summum RR Mullet 2026 |
| Colour | Blue / Black / Silver |
| Price | £7,999 |
| Frame | Summum MX 6061 Alloy Stealth Evo, Mullet, hydroformed tubing, Updated Zero Suspension System, 200mm travel, Forward Geometry, alloy upper link with shock eyelet bearings, 12x157mm rear axle, UDH, 83mm BSA bottom bracket, MAX. capacity dual row Enduro bearings, HHG internal cable routing, ISCG 05 |
| Frame Sizes | M / L / XL |
| Fork | RockShox Boxxer Ultimate 29, Charger 3.2 RC2, 200mm, DebonAir+, 1-1/8" steerer tube, Boost 20x110mm axle, 52mm offset |
| Rear Shock | Rock Shox Vivid Coil Ultimate, 225x75mm, Linear rebound, Medium compression, spring preload, Trunnion top mount, 30x8mm bottom bushings |
| Shock Spring Rate | M: 450 lbs / L: 500 lbs / XL: 550 lbs |
| Front Travel | 200mm |
| Rear Travel | 200mm |
| Wheel Setup | Mullet |
| Front Wheel Size | 29" |
| Rear Wheel Size | 27.5" |
| Headset | Onoff DH ARS Adjustable Reach System, 1-1/8", sealed bearings, reach geometry kit cups (+/-5mm) |
| Stem | Onoff S9 DH CNC Integrated, 45-50mm adjustable length, 10mm rise, 31.8mm |
| Handlebar | Onoff S6 1.0 7050 alloy, 25mm rise, 800mm width, 8º backsweep, 5º upsweep, 31.8mm |
| Grips | Onoff Desert Pro, CNC lock-on, 135mm |
| Seatpost | Onoff S3 DH Alloy, 31.6mm, 300mm length |
| Saddle | Ergon SM10 DH Black |
| Front Brake | SRAM Maven Ultimate, 4-piston, HS2 220mm rotor |
| Rear Brake | SRAM Maven Ultimate, 4-piston, HS2 200mm rotor |
| Brake Lever | SRAM Maven Ultimate, SwingLink and lever pivot bearings, tool-free reach adjust |
| Rims | DT Swiss EX1700 Classic 29, 30mm internal width, welded aluminium, tubeless ready, 28 spokes front / 32 spokes rear |
| Spokes | DT Competition, straightpull |
| Front Hub | DT 350, Boost 20x110mm, IS 6-bolt |
| Rear Hub | DT 350 Classic with 72T Ratchet DEG System, Boost 12x157mm, IS 6-bolt, XD freehub |
| Front Tyre | Maxxis Assegai 29x2.5WT, 3C Maxx Grip, DH casing, tubeless ready |
| Rear Tyre | Maxxis Minion DHR II 27.5x2.5WT, 3C Maxx Terra, DH protection, tubeless ready |
| Crankset | SRAM XX DH T-Type, DUB axle, direct mount chainring, 160mm |
| Chainring | 36T aluminium T-Type |
| Bottom Bracket | SRAM DUB BSA, sealed bearings, 83mm |
| Chain | SRAM X0 Eagle T-Type, PowerLock |
| Rear Derailleur | SRAM XX DH AXS T-Type, 7-speed |
| Shifter | SRAM Eagle AXS Pod |
| Cassette | SRAM XS 797 10-24T, 7-speed |
| Chainguide | E.13 Vario Compact Upper Slider, alloy backplate, DMB lower slider, ISCG 05 adjustable upper slider |
| Claimed Weight | 18.9kg |
Geometry & Adjustment Highlights
| Feature | Details |
|---|---|
| Reach Adjustment | 3 headset positions: standard and +/-5mm |
| Bottom Bracket / Angle Adjustment | Lower shock-mount flip chip, +/-5mm BB height and +/-0.35° angle adjustment |
| Chainstay Adjustment | 455mm standard with 450mm or 460mm options via adjustable dropouts |
| Total Setup Options | Up to 27 possible configurations |
The Summum RR Mullet is a proper downhill race bike, so the whole build is focused on descending performance, big-hit control and track-specific adjustability rather than all-round trail use.