Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 29" -
Travel Front 203mm -
Travel Rear 200mm -
Fork Fox Performance Float 40
-
Groupset GX, e*thirteen -
Suspension Full -
Drivetrain 1 × 7 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
SM
158cm - 171cm
MD
168cm - 180cm
LG
178cm - 189cm
XL
186cm - 199cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Summum 29 6061 Alloy Stealth Evo, 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
Suspension Fork
Fox 40 29 Float FIT GRIP EVOL Performance, 203mm, air spring, 1-1/8” steerer tube, 20x110mm axle, offset 56mm. Settings: low-speed compression, low-speed rebound, air preload
Rear Shock
Fox DHX2 Performance Elite, 225x70mm. Settings: low-speed compression, low-speed rebound, spring preload. Trunnion top mount, 30x8mm bottom bushings
Drivetrain
Rear Derailleur
SRAM GX DH, 7s, medium cage, X-actuation 1:1
Front Derailleur
E.13 Vario Compact Upper Slider,Alloy backplate,DMB (Direct mount Bashguard) Lower Slider 34-36t, ISCG 05 adjustable upper slider
Shift Levers
SRAM trigger GX DH 7s, X-actuation 1:1
Crank
Truvativ Descendant DH, DUB axle, Direct mount chain ring, 165mm, Rings: 34T, steel, X-SYNC
Bottom Bracket
SRAM DUB BSA, sealed bearings, 83mm
Chain
SRAM PC1110 11s, Powerlock
Wheels
Front Hub
e*thirteen Boost 20x110mm, triple-sealed, fully machined aluminum, IS 6 bolts
Rear Hub
e*thirteen Superboost 12x157mm, triple-sealed, fully machined aluminum w/6-degree engagement, IS 6 bolts
Rims
e*thirteen LG1 Plus DH, IW29 29" Hookless, 6069 Welded Aluminum, 30mm internal width, tubeless ready, 32 spokes
Spokes
e*thirteen custom Hive triple-butted black steel, alloy nipples, nipple washers
Tires
Front: Michelin DH34 29x2.4, tubeless ready, Magi-X DH compound, double-reinforced DH shield casing, wire bead, Rear: Michelin DH34 29x2.4, tubeless ready, Magi-X DH compound, double-reinforced DH shield casing, wire bead
Brakes
Brakes
Front: SRAM Code R, oversized 4-piston caliper, Centerline 220mm IS 6 bolts one-piece rotor, steel-backed metal sintered pads, Rear: SRAM Code R, oversized 4-piston caliper, Centerline 220mm IS 6 bolts one-piece rotor, steel-backed metal sintered pads
Brake Levers
SRAM Code R, tool-free reach adjust
Cockpit
Stem
Onoff Krypton DH CNC Integrated FG, 25-30mm adjustable length, 31.8mm barbore, 6061 alloy, 2x6mm spacer
Handlebar
Onoff Sulfur 1.0 double butted 6061 alloy, rise: 20mm, width: 800mm, 9º backsweep, 5º upsweep, 31.8mm barbore
Grips
Onoff Desert, 1lock-on, 135mm
Headset
Onoff Mercurium 1.5 ZS for 1-1/8” steerer tube, 41x30.15x7x45ºx45º ACB sealed bearings, geometry kit cups, external diameter 56mm
Seat
Saddle
SDG I-Fly 2.0 I-Beam, high-density PU foam, Cordura sides
Seatpost
SDG Micro I-Beam SP-751 Alloy, diameter 31.6mm, length 300mm, micro-adjustment
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | SM | MD | LG | XL |
|---|---|---|---|---|
| Stack Reach Ratio | 1.47 mm | 1.404 mm | 1.331 mm | 1.264 mm |
| Bottom Bracket Height | 350 mm | 350 mm | 350 mm | 350 mm |
| Rake | 58 mm | 58 mm | 58 mm | 58 mm |
| Stack | 632 mm | 632 mm | 632 mm | 632 mm |
| Reach | 430 mm | 450 mm | 475 mm | 500 mm |
| Top Tube Length | 576 mm | 596 mm | 621 mm | 646 mm |
| Seat Tube Angle | 77 ° | 77 ° | 77 ° | 77 ° |
| Seat Tube Length | 400 mm | 400 mm | 400 mm | 400 mm |
| Head Tube Angle | 63.5 ° | 63.5 ° | 63.5 ° | 63.5 ° |
| Head Tube Length | 112 mm | 112 mm | 112 mm | 112 mm |
| Chainstay Length | 450 mm | 450 mm | 450 mm | 450 mm |
| Wheelbase | 1256 mm | 1270 mm | 1301 mm | 1326 mm |
| Bottom Bracket Drop | 24 mm | 24 mm | 24 mm | 24 mm |
| Wheels | 29" | 29" | 29" | 29" |
| Rider Min Height | 158 cm | 168 cm | 178 cm | 186 cm |
| Rider Max Height | 171 cm | 180 cm | 189 cm | 199 cm |
About this model
SUMMUM R MX is part of the Mondraker Summum model. Mondraker launched 35 bikes of this model so far. You can get a glimpse at all models from 2023, by clicking on this link.
Safety
Make sure you wear a helmet on every ride, and that your bike performs well. In short, this means checking the tires, brakes, and chain to make sure everything is in good working order.
Downhill bikes average price
According to our calculations, the average cost of a Downhill bike that is reliable is 3391$. However, paying less money than this amount doesn’t mean that you couldn’t get a great Downhill bike. In short, before purchasing your ideal bike do some research about its components, and also check for reviews online.
Average weight for Downhill bikes
If we make a quick analysis of the average weight of a Downhill bike, we get 15.89 kg (35.03 lbs). You will have a greater advantage on climbs if your bike is easier than the average. On descents, however, a heavier bike will give you extra speed.
With a weight of 17.9 kg (39.46 lbs), Mondraker bike is considerably heavier than average. In short, the average Downhill bike weight is 12.65% lower than this one.
Internal Cable Routing
This bike has an internal cable routing. As a result, this helps to preserve the bike’s cables. No more cables around your bike.
SUMMUM R MX components
Fork
The Fox Performance Float 40 is included from the factory. It has a travel distance of 203mm. Bike forks are perfect to absorb shocks and provide a great riding experience overall. In conclusion, always look for a fork with decent travel when you buy a bike.
Rear Shock
The shock that’s installed on this bike is Fox DHX2 Performance Elite, with a travel distance of 200mm. Rear shocks give you increased comfort, control, and traction, which is important when cornering or braking. This allows you to ride faster on bumpy roads. In short, if you want smooth rides, get a full-suspension bicycle.
Wheels
The wheels on SUMMUM R MX are the 29″ aluminum type. These wheels are more forgiving when you go over roots, rocks, bumps, or other obstacles you encounter on your ride. However, if you’re not a tall person, you might find it difficult to adapt to this wheel size.
Brakes
When you want to stop the bike in time, the brakes are vital. The SUMMUM R MX has Hydraulic Disc brakes. Hydraulic disc brakes are perfect for mountain biking, road cycling, and commuting. To sum up, your safety is in good hands.
Sizes
SUMMUM R MX comes in 4 sizes, that range from 158 cm – 199 cm (5.18 ft – 6.53 ft). In conclusion, you won’t have a problem finding one that suits you.