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The quintessential steel UK trail hardtail - redefined.

Tarn is our dedicated 27.5+ offering, designed from the ground up around the new Boost axle standards, wider chainline and new-school progressive geometry. A beautifully crafted steel frame and an enviable part spec with the new Shimano SLX 1x11 drivetrain, Rockshox Yari RL Solo Airfork, FATlab 40mm rims, KS dropper seatpost and tubeless-ready WTB Ranger 2.8" rubber will happily handle anything and everything the UK's trails can throw at you.

Genesis Mjölnir Seamless Double-Butted Cromoly
Front Fork
Rockshox Yari RL, Solo Air, 120mm, Tapered Steerer, 110mm x 15mm
Head Set
Genesis 60mm /+0deg
Genesis alloy / 760mm x 5mm rise
Tape / Grips
Genesis Loc On
Front Brake
Shimano M506 180/160mm
Rear Brake
Shimano M506 180/160mm
Brake Levers
Shimano M506
Rear Derailleur
Shimano SLX RD-M7000-11
Shift Levers
Shimano SLX SL-M7000
Shimano SLX CS-M7000 / 11-42T
Crank Set
Shimano SLX FC-M7000-B 32T
Bottom Bracket
Shimano BB52
Front Rim
FATlab 40mm Tubeless-Ready, 32h
Front Hub
Shimano HB-M618 / FH-M618 32h
Rear Rim
FATlab 40mm Tubeless-Ready, 32h
Rear Hub
Shimano HB-M618 / FH-M618 32h
Stainless steel 14g
Front Tyre
WTB Ranger 27.5+x2.8"
Rear Tyre
WTB Ranger 27.5+x2.8"
Genesis MTB
Seat Post
KS DropZone 31.6mm / 125mm drop

Delivery Information

Hargroves Cycles offer Free Delivery for all orders over £9 with in Mainland UK (orders below £9 will be charged £1.99)

Bikes and Bulky items are sent via TNT Courier and smaller items are sent via Royal Mail 2nd Class Post.

Items over £50 are sent with Royal Mail 1st Class track able service which is emailed to the customer on the day of dispatch.
For full delivery details please see our Delivery Page

International Delivery

Hargroves Cycles delivery all across Europe. Goods are shipped from the UK and are subject to import duties where applicable

For further delivery, pricing and restriction information please view our International Shipping Page

Returns Information

We will happily exchange or refund any item purchased at Hargroves Cycles within 365 days, except gift vouchers and personalized products, except where faulty.

Returned goods must be unused and supplied with their original packaging, unless faulty.

For full details on our Returns procedure please visit out Returns Section.

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You're reviewing: Genesis Tarn 20 - 2017 Mountain Bike

At Genesis we love all sorts of bikes, so odds-on the bikes you love to ride are the ones we enjoy bringing to life. We aren’t the biggest brand or perhaps the coolest, we don’t spend the most on marketing and definitely haven’t been around the longest, we aren’t at the pointy end of the latest fad and don’t take ourselves too seriously either… but what we are serious about is delivering an ever-broader range full of only really good bikes.

We’re honest about what we make and where we make it, we’re proud to create bikes that work well and meet a need perfectly, we love bikes that are built properly and last like they’re meant to and we like our bikes to look good too.

  • Genesis Tarn 20 - 2017 Mountain Bike