The Summun R MX is a downhill mountain bike that
is designed to take on thrilling downhill descends. It features a zero suspension system, which makes the rear suspension offer exceptional small bump com- pliance while remaining robust for handling large impacts. The bike also has fox forks and forward geometry providing a stable and predictable ride,
while the stealth alloy frame keeps the weight down making it perfect for riders who want to push their
limits
Stealth Alloy
STEALTH ALLOY encompasses all processes in the creation of the frame, from the industrial design to the specific production of each of its tubes with the calculation of the most precise details. Each tube and part is carefully designed to carry out a specific function while striving to achieve the lowest possible weight. Stealth technology is evolving every year with optimised shapes and internal updates to deliver the best riding experience in our aluminium frames.
Advantages:
• Advanced Industrial Design.
• Distinctive looks.
• Best-in-class lightweight/structural stiffness.
Forward Geometry
Forward Geometry improves safety and confidence when descending at speed combined with sharper, more direct handling and better tracking; plus, more stability on technical climbs and rough terrain combined with better grip and improved control.
Zero Suspension System
ZERO is a virtual pivot suspension system with an exclusive dual link design. The most unique and exclusive feature of ZERO is that the shock floats between the two suspension links and is compressed from both ends. This makes the rear suspension extremely supple on small bumps and big hit capable, really the most acknowledgeable and astounding feature of every Mondraker full suspension bike.
Advantages:
• ZERO POWER LOSS
• ZERO PEDAL KICKBACK
• ZERO BRAKE JACK
• ZERO BUMPS
Geometry
| FRAME SIZE | S | M | L | XL |
|---|---|---|---|---|
| A Seattube length | 400 mm | 400 mm | 400 mm | 400 mm |
| B Toptube length | 575 mm | 596 mm | 621 mm | 645 mm |
| C Bottom bracket drop | -5 mm | -5 mm | -5 mm | -15 mm |
| D Bottom bracket height | 350 mm | 350 mm | 350 mm | 350 mm |
| E Chainstay length | 450 mm | 450 mm | 450 mm | 450 mm |
| F Seat tube angle | 69° | 69° | 69° | 69° |
| G Effective seattube angle | 77° | 77° | 77° | 77° |
| H Headtube angle | 63.5° | 63.5° | 63.5° | 63.5° |
| I Fork Offset | 58 mm | 58 mm | 58 mm | 58 mm |
| J Wheelbase | 1256 mm | 1270 mm | 1301 mm | 1326 mm |
| K Headtube length | 112 mm | 112 mm | 112 mm | 112 mm |
| L Reach | 430 mm | 450 mm | 475 mm | 500 mm |
| M Stack | 632 mm | 632 mm | 632 mm | 632 mm |
- 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 b
- FRAME MATERIAL:
- Aluminium
- FORK BRAND:
- Fox
- 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
- FORK TRAVEL:
- 200 mm
- REAR SHOCK:
- Fox DHX2 Performance Elite, 225x70mm. Settings: low-speed compression, low-speed rebound, spring preload. Trunnion top mount, 30x8mm bottom bushings
- WHEEL SIZE:
- 27.5 R 29 F
- WHEELS:
- 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
- TYRES:
- Maxxis Assegai 29x2.5WT, tubeless ready, 3C MAXX GRIP compound, DH casing, 60x2TPI, folding bead / Maxxis Dissector 27''5x2.4 WT, tubeless ready, 3C MAXX GRIP compound, DH casing, 60x2TPI, folding bead
- DROPPER SEATPOST:
- No
- SEATPOST:
- Onoff S3 DH Alloy, diameter 31.6mm, length 300mm
- SADDLE:
- Ergon SM10 DH Black
- CRANKSET:
- Sram Truvativ Descendant DH, DUB axle, Direct mount chain ring, 165mm CL 56´5
- STEM:
- Onoff S9 DH CNC Integrated, 45-50mm adjustable length, 10mm rise, 31.8mm barbore, 7075 alloy, 2x6mm spacer
- GRIPS:
- Onoff Beehive, 1lock-on, 135mm
- SHIFTERS:
- Sram trigger GX DH 7s, X-actuation 1:1
- BRAKE BRAND:
- SRAM
- HYDRAULIC BRAKES:
- Yes
- BRAKES:
- Front: Sram DB8, oversized 4-piston caliper, Centerline 220mm IS 6 bolts one-piece rotor, steel-backed metal sintered pads / Rear: Sram DB8, oversized 4-piston caliper, Centerline 203mm IS 6 bolts one-piece rotor, steel-backed metal sintered pads
- FRONT DERAILLEUR:
- e*Thirteen Vario Compact Upper Slider ,Alloy backplate ,DMB (Direct mount Bashguard) Lower Slider 34-36t, ISCG 05 adjustable upper slider
- REAR DERAILLEUR:
- Sram GX DH, 7s, medium cage
- CHAIN:
- Sram PC1110 11s, Powerlock
- NUMBER OF GEARS:
- 7 Speed
- PEDALS:
- Available for Purchase
- FRONT MUDGUARD:
- MTB Monster Mudguard
- EXTRAS:
- N/A
- TYPE OF BIKE:
- Downhill
- DESIGNED FOR:
- Purely focused on conquering descents in the most efficient and aggressive way possible. Not designed for pedalling uphill and are typically loaded onto lifts or shuttles to reach the starting point.
- IDEAL TERRAIN:
- Descents with features like steep chutes, huge drops, challenging jumps and very technical rock gardens.
- PLEASE NOTE:
- Mondraker reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing.
