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  • Product Information
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  • Hardtail MTB Guide
  • 0% APR Finance
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  • What's In The Box
  • Product Description

    Back country riding requires a capable, as well as fun bike. That is the Kona Unit X 27.5+ to a tee. The Reynolds 520 Butted Cromoly frame is super strong, and has all the mounting points so you can pack it up for adventure. A rigid fork keeps things simple, while the natural damping of the steel frame and wide 2.8” WTB tyres give bump absorption when headed into rough mountains.

    Key Features:

    • Reynolds 520 Butted Cromoly frame
    • WTB Scraper i40 Pinned TCS wheels
    • Kona Plus Fork
    • SRAM NX crankset
    • SRAM NX 11speed drivetrain
    • Kona XC/BC Riser bar, Kona XC/BC stem, Kona Key Grip
    • SRAM Level T brakes
    • WTB Ranger TCS 27.5x2.8" tyres
    • Sizes: Small, Medium, Large, X Large
    • Colours: Gloss Red/Black/Green/Black Decals
    • The Kona Unit X 27.5+ is available with 0% APR finance

    The Unit has long been our Reynolds 520 singletrack shredder, adaptable to a wide variety of purposes and only made more versatile with the addition of 27.5+ wheels. For the first time we’re offering a Unit with gears – a SRAM NX 1x11, to be specific – and we’re truly excited about the opportunities this opens up. Whether you’re looking for a fun-loving trail bike or a backcountry bikepacking rig, the Unit X is ready for action.

    All Tredz bikes are:

    • Fully built & ready to ride
    • Fully checked & tested by Cytech qualified mechanics
    • Available with 0% APR finance (up to 48 months) on any basket over £250
    • UK price match guarantee
    • 365 day no hassle returns
    • Free delivery in the UK Mainland on a date that suits you

    In the box with every Tredz bike is:

    • Free Tredz 9 key trail tool
    • Free Tredz pedal spanner
    • Free basic pedals
    • Tredz drawstring kit bag
    • 16 point quality control check sheet
    • Basic bike setup instructions
    • Free Cycle Plan insurance voucher (8 weeks)


    Frame: Reynolds 520 Butted Cromoly
    Fork: Kona Plus fork
    Headset: TH ZST No.10
    Stem: Kona XC/BC
    Bars: Kona XC/BC Riser
    Front Brake: SRAM Level T 180mm
    Rear Brake: SRAM Level T 160mm
    Brake Lever: SRAM Level T
    Rear Mech: SRAM NX
    Shifters: SRAM NX
    Speed: 11
    Rims: WTB Scraper i40 Pinned TCS
    Front Hub: Formula 100x9mm
    Rear Hub: Formula 135x10mm
    Spokes: Sandvik Stainless Black 15g fr / 14g rr
    Front Tyre: WTB Ranger TCS 27.5x2.8"
    Rear Tyre: WTB Ranger TCS 27.5x2.8"
    Seat Post: Kona Thumb w/Offset 31.6mm
    Chainset: SRAM NX 28t
    Bottom Bracket: SRAM Powerspline 73mm
    Chain: SRAM PC1110
    Cassette: SRAM PG1130 11-42t 11spd
    Pedals: Kona JS2

    Occasionally without notice, manufacturers sometimes change product specifications.

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