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Nature BIKES
Range SUMMUM
Season 2022

The Summum Carbon R doesn’t give the Carbon RR any quarter.

With the same frame as the RR and also available with the MX wheel option (29" front wheel and 27.5" rear) it’s the one you’ll see the most of on DH tracks. Effective, fast and indestructible, you’ll be the one to set the limits because the Summum Carbon R is always begging for more.
Size guide

Components

Technical specs

  • frame

    Frame

    Summum Carbon Stealth Air full Carbon, Zero Suspension System, 200mm travel, Forward Geometry, Carbon Monoblock upper link, SuperBoost 12x157mm rear axle, 83mm BSA bottom bracket, HHG internal cable routing, MAX. capacity dual row Enduro bearings, shock mudguard, ISCG 05, custom frame protectors. *Optional Geometry kit

    sizes

    Sizes

    S / M / L / XL MX

  • 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: 800mm, 9º backsweep, 5º upsweep, 31.8mm barbore

  • grips

    Grips

    ONOFF Diamond, 1 lock-on, 135mm

    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 29" 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 27.5x2.4, 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

  • front derrailleur

    Front derrailleur

    E.13 Vario Compact Upper Slider, Alloy backplate, DMB (Direct mount Bashguard) Lower Slider 34-36t, 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

  • others

    Others

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

    weight

    Weight

    16.8 kg

Sizes

Geometry

  Frame size S M L XL
A Seattube length 400 mm 400 mm 400 mm 400 mm
B Toptube length 577 mm 596 mm 622 mm 647 mm
C Bottom bracket drop 0 mm 0 mm 0 mm 0 mm
D Bottom bracket height 350 mm 350 mm 350 mm 350 mm
E Chainstay length 450/455/460 mm 450/455/460 mm 450/455/460 mm 450/455/460 mm
F Seat tube angle 69° 69° 69° 69°
G Effective seattube angle 77° 77° 77° 77°
H Headtube angle 62,5º 63º 63º 63°
I Fork Offset 56 mm 56 mm 56 mm 56 mm
J Wheelbase 1260 mm 1270 mm 1295 mm 1320 mm
K Headtube length 110 mm 110 mm 110 mm 110 mm
L Reach 427 mm 445 mm 470 mm 495 mm
M Stack 633 mm 633 mm 633 mm 633 mm

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