Mondraker Summum R Mullet Mountain Bike 2025 - Downhill Full Suspension MTB
Built for pure downhill performance, the Mondraker Summum R Mullet pairs a long-travel alloy chassis with mullet wheels, aggressive geometry and a full SRAM DH drivetrain for flat-out bike park laps and World Cup lines.
Key Features:
- Stealth Alloy Evo frame with Zero suspension and Forward Geometry
- Fox 40 29 GRIP Performance fork with 203mm of travel
- Fox DHX2 Performance Elite coil shock with 200mm rear travel
- SRAM GX DH 7-speed drivetrain with Descendant crankset
- SRAM DB8 4-piston brakes with 220/203mm rotors
- 29” front / 27.5” rear wheels with Maxxis DH tyres
- Mavic Deemax BikePark rims with ID360 freehub
- Available with 0% APR finance
The Mondraker Summum R Mullet brings World Cup pedigree to your local downhill tracks, with a geometry honed through elite-level competition and a spec that’s built to take on the toughest lines. This is a non-electric downhill mountain bike designed for gravity riders who want a race-proven platform with exceptional performance and handling.
The Stealth Alloy Evo frame uses Mondraker’s Forward Geometry for greater high-speed stability and front-end control, while the Zero Suspension System provides 200mm of rear wheel travel for smooth tracking over roots, rocks and big hits. A mullet wheel setup – 29” up front, 27.5” out back – gives the best of both worlds: rollover speed and nimble cornering.
At the front, the Fox 40 GRIP Performance fork delivers 203mm of adjustable travel via an air spring and Rush RL damper, while the rear is controlled by a Fox DHX2 Performance Elite coil shock, tuned for low-speed compression and rebound control.
The SRAM GX DH 7-speed drivetrain keeps things tough and reliable with a short-range cassette perfect for downhill use, while SRAM DB8 4-piston brakes with oversized rotors give you powerful, confident stopping on steep, technical terrain.
Mavic Deemax BikePark wheels are built to withstand repeated abuse, paired with Maxxis Assegai and Dissector tyres in DH casing for grip and durability. The cockpit, seatpost and saddle are all downhill-specific from Onoff and Ergon, offering rider confidence and all-day support when smashing laps.
While it shares its DNA with Mondraker’s World Cup team bikes – including input from riders like Dakotah Norton and Ronan Dunne – the Summum R Mullet is made from 6061 hydroformed alloy, making it more accessible while still retaining the stiffness and responsiveness demanded by elite racers.
Perfect for uplift days, bike parks or racing against the clock, the Mondraker Summum R Mullet is a DH machine with the performance to back it up.
Occasionally, without notice, manufacturers change product design and/or specifications.
| 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, HHG internal cable routing |
| Fork | Fox 40 29 Float GRIP Performance, 203mm, air spring, 1-1/8” steerer tube, 20x110mm axle, offset 52mm. Settings: 3-pos compression dial, air preload |
| Rear Shock | Fox DHX2 Performance Elite, 225x70mm. Settings: low-speed compression, low-speed rebound, spring preload. Trunnion top mount, 30x8mm bottom bushings |
| 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 |
| Bars | Onoff S3 1.0 6061 alloy, rise: 25mm, width: 800mm, 8º backsweep, 5º upsweep, 31.8mm barbore. L and XL size: 1.5 rise. |
| 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 |
| Front Mech | E.13 Vario Compact Upper Slider ,Alloy backplate ,DMB (Direct mount Bashguard) Lower Slider 34-36t, ISCG 05 adjustable upper slider |
| Rear Mech | Sram GX DH, 7s, medium cage |
| Shifters | SRAM trigger GX DH 7s, X-actuation 1:1 |
| Speed | 7 |
| Rims | Mavic Deemax BikePark 29, 30mm internal width, 32 holes |
| Front Hub | Mavic Boost 20x110mm, IS 6 bolts |
| Rear Hub | Mavic 12x157mm, ID360 freewheel, sealed bearings, IS 6 bolts, HG freehub |
| Spokes | Mavic 32 steel flat spokes |
| Front Tyre | Maxxis Assegai 29x2.5WT, tubeless ready, 3C MAXX GRIP compound, DH casing, 60x2TPI, folding bead |
| Rear Tyre | Maxxis Dissector 27''5x2.4 WT, tubeless ready, 3C MAXX GRIP compound, DH casing, 60x2TPI, folding bead |
| Seat Post | Onoff S3 DH Alloy, diameter 31.6mm, length 300mm |
| Saddle | Ergon SM10 DH Black |
| Chainset | Sram Truvativ Descendant DH, DUB axle, Direct mount chain ring, 165mm CL 56´5. 34T, steel, X-SYNC |
| Bottom Bracket | SRAM DUB BSA, sealed bearings, 83mm |
| Chain | SRAM PC1110 11s, Powerlock |
| Cassette | SRAM PG 720 11-25T, 7s |
Mountain Bike Size Chart
|
Height
|
Bike Size
|
Mountain Bike Size
|
|
4’8” – 5’1”
143 – 155 cm
|
XXS
|
13” (33 cm)
|
|
5’1” – 5’4”
155 – 163 cm
|
XS
|
15” (38 cm)
|
|
5’4” – 5’7”
163 – 170 cm
|
S
|
16” (41 cm)
|
|
5’7” – 5’10”
170 – 178 cm
|
M
|
18” (46cm)
|
|
5’10” – 6’0”
178 – 183 cm
|
L
|
19” (48cm)
|
|
6’0” – 6’3”
183 – 191 cm
|
XL
|
20” (51 cm)
|
|
6’3” – 6’5”
191 – 196 cm
|
XXL
|
21” (53 cm)
|
|
6’5” – 6’9”
196 – 205 cm
|
XXXL
|
22” (56 cm)
|
* Mountain bikes are sized differently to road bikes. Typically, they are sized in inches as the first MTBs were produced in the USA. European brands like Lapierre and Haibike like to use centimetres for all their bikes. The measurements of their mountain bikes doesn’t match their road bikes but are like a simple conversion from the inches measurement. This is why we have included cm measurements in brackets for the Mountain bike column.
Read our bike size guide for more information on sizing.
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