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Nature BIKES
Range THUNDRA
Season 2021
Size guide

Components

Technical specs

  • frame

    Frame

    Thundra 6061 Xtralite Full Butted Alloy, Forward Geometry, integrated internal non-removable battery, tapered head tube, Boost 12x148mm rear axle, integrated dropout speed sensor.*Optional external battery

    sizes

    Sizes

    XS: 380mm / S: 390mm / M: 430mm / L: 470mm / XL: 510mm

  • fork

    Fork

    RockShox Recon Silver RL 29, 120mm, Motion control, Solo Air, tapered steerer tube, Boost 15x110mm axle, 42mm offset. Settings: compression adjustment at low-speed to lock, rebound, air preload

    headset

    Headset

    Onoff Saturn tapered for 1-1/8” to 1-1/2” head tube, ACB sealed bearings, top 41x30.2x7x45ºx45º, bottom 51.9x40x8x45ºx45º

  • stem

    Stem

    MDK Urban 35mm, 6061 forged alloy, 31.8mm barbore

    handlebar

    Handlebar

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

  • grips

    Grips

    Onoff Twin, 1lock-on, 135mm

    seatpost

    Seatpost

    Onoff Sulfur 0-R, 6061 T6 Alloy, 3D forged, diameter 31.6mm, length 400mm

  • saddle

    Saddle

    Mondraker e-MTB custom design

    front brake

    Front brake

    Shimano MT201, RT66 203mm IS 6 bolts rotor, resin pads

  • rear brake

    Rear brake

    Shimano MT201, RT66 180mm IS 6 bolts rotor, resin pads

    brake lever

    Brake lever

    Shimano MT201, tooled reach adjust

  • rims

    Rims

    MDK-HP1 29, 30mm internal width, tubeless ready, 32 spokes

    spokes

    Spokes

    CN round stainless steel

  • front hub

    Front hub

    Formula DC711, Boost 15x110mm, sealed bearings, IS 6 bolts

    rear hub

    Rear hub

    Formula EHL148 Boost 12x148mm, sealed bearings, IS 6 bolts

  • front tire

    Front tire

    Maxxis Grifter 29x2.5, single compound, 60TPI, wire bead

    rear tire

    Rear tire

    Maxxis Grifter 29x2.5, single compound, 60TPI, wire bead

  • crankset

    Crankset

    Shimano STEPS E8000, 165mm

    rings

    Rings

    Sram X-Sync 2 Eagle 34T, steel, narrow-wide, 104 BCD

  • chain

    Chain

    Sram SX Eagle, 12s, Powerlock

    rear derrailleur

    Rear derrailleur

    Sram SX Eagle, Type 3 roller bearing clutch, cage lock, long cage, 1x12s, X-actuation 1:1

  • shift levers

    Shift levers

    Sram Trigger SX Eagle, 12s, X-Actuation 1:1, single click

    casette

    Casette

    Sram PG-1210, 11-50T, 12s

  • derailleur hanger

    Derailleur hanger

    Mondraker M068

    others

    Others

    Front and rear lights, front and rear fenders, rear rack, kickstand. *Optional external battery: Simplo 360Wh

  • weight

    Weight

    23.9 kg

    display

    Display

    Shimano STEPS E5000

  • motor

    Motor

    Shimano STEPS E7000

    battery

    Battery

    Simplo internal 630Wh

Sizes

Geometry

  Frame size XS S M L XL
A Seattube length 380mm 390mm 430mm 470mm 510mm
B Toptube length 600mm 615mm 645mm 670mm 700mm
C Bottom bracket drop -60mm -60mm -60mm -60mm -60mm
D Bottom bracket height 317mm 317mm 317mm 317mm 317mm
E Chainstay length 455mm 455mm 455mm 455mm 455mm
F Seat tube angle 73.5º 73.5º 73.5º 73.5º 73.5º
G Effective seattube angle 73.5º 73.5º 73.5º 73.5º 73.5º
H Headtube angle 69º 69º 69º 69º 69º
I Fork Offset 51mm 51mm 51mm 51mm 51mm
J Wheelbase 1138mm 1153mm 1183mm 1210mm 1240mm
K Headtube length 110mm 110mm 110mm 130mm 130mm
L Reach 410mm 425mm 455mm 480mm 505mm
M Stack 640mm 640mm 640mm 658mm 658mm
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