SUMMUM
Mondraker
Downhill
SUMMUM is an alloy downhill mountain bike (2023), by Mondraker, from the Summum lineup. This setup will suit riders looking for a balanced off-road setup, leaning toward a balanced riding position, while being more at home in gravity-focused bike park riding. The main strengths in the metrics are capable suspension support for rougher terrain and a balanced ride feel between comfort and directness. What it gives up slightly is less emphasis on outright speed than speed-focused builds. Use MatchBikes.com to compare this bike with nearby downhill options.
7.0
Rating

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Score Summary
Performance
6.6
Fit
7.6
Performance
Built for speed and efficiency
Speed
2.2
Very Low
Climbing Efficiency
2.9
Hefty but Manageable
Suspension
10.0
Extreme rough-terrain ready
Fit
Dialed-in Fit & Comfort
Riding Position
6.7
Balanced
Fit Flexibility
6.1
Moderately Adjustable
Ride Comfort
8.7
Balanced
Value
Surface Range
Bike ParkSpecifications
General
Brand
Mondraker
Model
SUMMUM
Year
2023
Weight
18.4 kg
Category
Mountain
Sub Category
Downhill
Groupset
GX, e*thirteen
Wheels
29"
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
Rockshox Boxxer Select RC 29, 200mm, DebonAir+, 1-1/8” steerer tube, Boost 20x110mm axle, offset 52mm. Settings: low-speed compression, rebound, air preload
Rear Shock
Rock Shox Super Deluxe Coil Select R, 225x70mm. LNM ST B1, Linear rebound, Medium compression, spring preload. Trunnion top mount, 30x8mm bottom bushings
Suspension Type
Full
Drivetrain
Shift Levers
SRAM trigger GX DH 7s, X-actuation 1:1
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
Crank
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
Wheels
Front Hub
Mavic Boost 20x110mm, IS 6 bolts
Rear Hub
Mavic 12x157mm, ID360 freewheel, sealed bearings, IS 6 bolts, HG freehub
Rims
Mavic Deemax BikePark 29, 30mm internal width, 32 holes
Spokes
Mavic 32 steel flat spokes
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
Brake Type
Hydraulic Disc
Brake Description
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 220mm IS 6 bolts one-piece rotor, steel-backed metal sintered pads
Brake Levers
SRAM DB8, tool reach adjust, lever pivot bushings
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 Twin, 1lock-on, 135mm
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
Geometry
| Measurement | 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 |
| Front Center | 811 mm | 821 mm | 846 mm | 871 mm |
| Rake | 58 mm | 58 mm | 58 mm | 58 mm |
| Trail | 122 mm | 122 mm | 122 mm | 122 mm |
| Stack | 632 mm | 632 mm | 632 mm | 632 mm |
| Reach | 430 mm | 450 mm | 475 mm | 500 mm |
| Top Tube Length | 573 mm | 593 mm | 618 mm | 643 mm |
| Seat Tube Angle | 77 ° | 77 ° | 77 ° | 77 ° |
| Seat Tube Length | 400 mm | 400 mm | 400 mm | 400 mm |
| Head Tube Angle | 63 ° | 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 | 1260 mm | 1270 mm | 1295 mm | 1320 mm |
| Bottom Bracket Drop | 20 mm | 20 mm | 20 mm | 20 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 |




























































