Menu
Nature BIKES
Range SUMMUM
Season 2021

Drawing on 20 years of innovation from Mondraker’s engineers and designers, working closely with World Cup-winning riders, the 2021 Summum R features the all-new Stealth Alloy frameset with Forward Geometry.

Summum Alloy R has the latest incarnation of our race-proven Zero Suspension, featuring 200mm travel and new metric kinematics that make rocks and hazards disappear, and help you soak up the big drops like you’re floating. It works with the high performance piggyback/coil Fox DHX2 Performance Elite shock, and is paired up-front with the new Fox 40 29 FIT Grip2 factory fork – 203mm of travel and the moto-inspired Grip damper to keep you on track. With new E.13 LG1 DH Plus Boost wheelset, 2.4in Michelin DH34 tires and SRAM Code R 4-pots, the new Summum Alloy R is all set to feed your confidence and keep you pinned!
Size guide

Components

Technical specs

  • 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 raw Enduro bearings, HHG internal cable routing, ISCG 05. *Optional Geometry kit

    sizes

    Sizes

    S: 400mm / M: 400mm / L: 400mm / XL: 400mm

  • rear shock

    Rear shock

    Fox DHX2 Performance Elite, 225x70mm. Settings: low-speed compression, low-speed rebound, spring preload. Trunnion top mount, 30x8mm bottom bushings

    shock settings

    Shock settings

    ECC010 compression, ECR012 rebound. Spring rate: S size 400 lbs, M size 450 lbs, L/XL size 500 lbs

  • fork

    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

    headset

    Headset

    Onoff Mercurium 1.5 ZS for 1-1/8” steerer tube, 41x30.15x7x45ºx45º ACB sealed bearings, geometry kit cups, external diameter 56mm

  • stem

    Stem

    Onoff Krypton DH CNC Integrated FG, 25-30mm adjustable length, 31.8mm barbore, 6061 alloy, 2x6mm spacer

    handlebar

    Handlebar

    Onoff Sulfur 1.0 double butted 6061 alloy, rise: 20mm, width: 780mm, 9º backsweep, 5º upsweep, 31.8mm barbore

  • grips

    Grips

    Onoff Desert, 1lock-on, 135mm, sizes: S/M L/XL

    seatpost

    Seatpost

    SDG Micro I-Beam SP-751 Alloy, diameter 31.6mm, length 300mm, micro-adjustment

  • saddle

    Saddle

    SDG I-Fly 2.0 I-Beam, high-density PU foam, Cordura sides

    front brake

    Front brake

    Sram Code R, oversized 4-piston caliper, Centerline 203mm IS 6 bolts one-piece rotor, steel-backed metal sintered pads

  • rear brake

    Rear brake

    Sram Code R, oversized 4-piston caliper, Centerline 203mm IS 6 bolts one-piece rotor, steel-backed metal sintered pads

    brake lever

    Brake lever

    Sram Code R, tool-free reach adjust

  • rims

    Rims

    e*thirteen LG1 Plus DH, IW29 Hookless, 6069 Welded Aluminum, 30mm internal width, tubeless ready, 32 spokes

    spokes

    Spokes

    e*thirteen custom Hive triple-butted black alloy, alloy nipples, nipple washers

  • front hub

    Front hub

    e*thirteen Boost 20x110mm, triple-sealed, fully machined aluminum, IS 6 bolts

    rear hub

    Rear hub

    e*thirteen Superboost 12x157mm, triple-sealed, fully machined aluminum w/6-degree engagement, IS 6 bolts

  • front tire

    Front tire

    Michelin DH34 29x2.4, tubeless ready, Magi-X DH compound, double-reinforced DH shield casing, wire bead

    rear tire

    Rear tire

    Michelin DH34 29x2.4, tubeless ready, Magi-X DH compound, double-reinforced DH shield casing, wire bead

  • crankset

    Crankset

    Truvativ Descendant DH, DUB axle, Direct mount chain ring, 165mm

    rings

    Rings

    34T, steel, X-SYNC

  • bottom bracket

    Bottom bracket

    Sram DUB BSA, sealed bearings, 83mm

    chain

    Chain

    Sram PC1110 11s, Powerlock

  • derailleur hanger

    Derailleur hanger

    E.13 LG1+ Race Carbon chain guide, IFD DMB (Direct mount Bashguard) Gen 2 Stealth Idler, Aluminum hardware, adjustable/replaceable lower armature, polycarbonate, ISCG 05, adjustable upper slider

    rear derrailleur

    Rear derrailleur

    Sram GX DH, 7s, medium cage, X-actuation 1:1

  • shift levers

    Shift levers

    Sram trigger GX DH 7s, X-actuation 1:1

    casette

    Casette

    Sram PG 720 11-25T, 7s

  • derailleur hanger

    Derailleur hanger

    Mondraker M068

    others

    Others

    *Optional geometry kit: +-1º / +-2º headset cups

  • weight

    Weight

    17.5 kg

Sizes

Geometry

  Frame size S M L XL
A Seattube length 400 mm 400 mm 400 mm 400 mm
B Toptube length 573 mm 593 mm 618 mm 643 mm
C Bottom bracket drop -20 mm -20 mm -20 mm -20 mm
D Bottom bracket height 350 mm 350 mm 350 mm 350 mm
E Chainstay length 450mm 450mm 450mm 450mm
F Seat tube angle 69° 69° 69° 69°
G Effective seattube angle 77° 77° 77° 77°
H Headtube angle 63° 63,5° 63,5° 63,5°
I Fork Offset 58 mm 58 mm 58 mm 58 mm
J Wheelbase 1260 mm 1270 mm 1295 mm 1320 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

SUMMUM RANGE

Go to top of page