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    Medium and Large frames shipping now. Small and XL frames shipping in early summer.

    TECHNICAL DETAILS

    • Base Build
    • Frame Specs
    • Geometry
    • Tires & Rims
    FrameCarbon with Tuning Chip® dropout system
    ForkLithic full carbon fork, 15mm thru-axle
    HeadsetWolf Tooth Precision Headset
    Rear derailleurShimano 105 GS, 11 speed
    Front derailleurShimano 105, braze-on mount
    ShiftersShimano 105 mechanical, 11 speed
    CassetteShimano 105, 11-32t, 11 speed
    BrakesShimano 105 R7020 Hydraulic
    CranksShimano RS510, 50/34
    Bottom bracketShimano english thread BSA, Ø68mm
    HandlebarLithic Corundum aluminum compact drop with 16° flare
    GripsCork handlebar tape, black
    Stem6061 aluminum
    Seatpost6061 aluminum
    Seatpost ClampWolf Tooth 34.9mm
    SeatWTB, Custom for Otso
    WheelsDT Swiss C 1800 SPLINE, 100x15mm front and 142x12mm rear hub spacing
    TiresTerrene Elwood 700x40 Light
    ChainShimano HG-11X
    Frame SizesS, M, L, XL
    Weight (size M)20.6 lbs (9.3kg) set up tubeless
    Bottom bracket standard68mm BSA threaded
    Q-factor146mm with Shimano 105 crankset
    Maximum chainring size2x 53T round; 1x 50T round or 46T oval
    Front derailleur typeBraze-On, bottom pull
    HeadsetZS44/28.6 upper, ZS56 lower
    Seatpost diameterØ30.9mm
    Seatpost clampØ34.9mm
    Front/rear hub standard100x15mm thru axle / 142x12mm thru axle
    Front/rear axleØ15x100mm front, TP=1.5, TL=15mm / Ø12x180mm rear, TP=1.5, TL=12mm
    Derailleur hangerTuning Chip Right Dropout
    Rear brake (rotor)flat mount (160mm)
    Front brake (rotor)flat mount (160mm)
    Fork axle-to-crown420mm
    Fork offset47mm
    Bare frame weight (M)1024g
    Fork weight (Lithic Hiili 420)490g
    Tire clearance (frame)40mm at 420mm chainstay position, 50mm at 430/440mm chainstay position
    Tire clearance (fork)Max Clearance 29x2.1" (54-622)
    SMLXL
    Recommended rider height5'2"-5'7"5'6-5'11"5'10"-6'3"6'2"-6'6"
    Recommended rider inseam29"-32"30"-34"33"-35"34"-37"
    Effective top tube546mm560mm583mm605mm
    Nominal head tube angle71°71.5°71.5°71.5°
    Tuning Chip induced head/seat tube angle change±0.2°±0.2°±0.2°±0.2°
    Head tube length94mm107mm149mm191mm
    Nominal seat tube angle72.5°72.5°72.5°72.5°
    Seat tube length475mm510mm540mm570mm
    Bottom bracket drop68-72mm68-72mm68-72mm68-72mm
    Chainstay length420-440mm420-440mm420-440mm420-440mm
    Wheelbase1008 - 1028mm1015-1035mm1039-1059mm1062-1082mm
    Trail71mm68mm68mm68mm
    Fork offset47mm47mm47mm47mm
    Rigid fork axle to crown length420mm420mm420mm420mm
    Stack541mm555mm595mm635mm
    Reach375mm385mm395mm405mm
    Standover737mm765mm798mm831mm

    Coming soon

    WARNING Handling this product will expose you to chemicals, including lead, known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For further information go to www.P65Warnings.ca.gov.​