Boardman MTR 8.6 Mens Mountain Bike 2021 - S, M, L, XL Frames
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Boardman MTR 8.6 Mens Mountain Bike 2021 - S, M, L, XL Frames 370790

Boardman MTR 8.6 Mens Mountain Bike 2021 - S, M, L, XL Frames is rated 3.5 out of 5 by 12.
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  • Shimano Deore 1x10 with 11-46T cassette
  • Maxxis Minion tubeless ready tyres
  • Suntour Air fork with 15mm thru axle

Step 1: Choose A Size

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Step 2: Would You Like It Built?


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  • FREE - Bike Built and Collected In-store (per bike)
  • £30.00 - Bike Built and Delivered (per bike)

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Boardman MTR 8.6 Mens Mountain Bike 2021

The 2021 MTR 8.6 is the perfect entry into riding UK and Irish trails. With a spec and set-up honed on British singletrack, this updated platform will give you confidence to push yourself further.
The new 2021 Boardman MTR 8.6 Mountain Bike is built on an updated, 29er MTR platform, a slacker head angle, longer reach and steeper seat angle all add up to a bike which feels super composed and reassuring as you push on down the trail. The 8.6 features a Suntour Air fork up front and a Rockshox rear shock which combine to give a controlled and predictable feel through rock and root sections. The 2021 MTR 8.6 features the new Shimano Deore M4100 1x10 drivetrain which has an 11-46T cassette giving plenty of range with precise shifts. The new MTRs are built on 29 inch wheels which give fantastic stability and smoothness. They come wearing a set of tubeless-ready Maxxis Minion tyres which give fantastic grip regardless of how wet and muddy the trails become.

Boardman MTR 8.6 specifics:

  • Gears: Shimano Deore M4100 1x10 with an 11-46T cassette giving a great range of gears
  • Frame: New 29er MTR platform with a trail ready geometry and dropper routing
  • Suspension: Suntour XCR 34 Boost thru-axle Air forks with Rockshox Deluxe Select R rear shock
  • Brakes: Tektro M285 hydraulic disc brakes for controlled and reliable stopping
  • Wheels: Boardman Tubeless ready wheels and tyres with Maxxis Minion DHF in the front and DHRII in the rear delivering good grip

More About The New Boardman MTR 8.6 Road Bike

New Shimano Deore 1x Drivetrain

For 2021 the MTR gets a major upgrade to its gearing - gone is the 2x9 of the previous generation and in its place you’ll find Shimano M4100 Deore 1x10. Thanks to Shimano’s Trickle-Down Technology programme this drivetrain has the look and feel of previous SLX and XT ranges and with its 11-46T cassette it has a wide range of gears which will help to shrink any hill. The clutch on the rear derailleur works in tandem with the narrow-wide chainring to improve chain retention whilst a 2-piece crankset gives great power transfer when pedalling.
New 29er platform

Sitting on 29-inch wheels for the first time, the 2021 Boardman MTR line-up have been designed as a range of trail-ready bikes which feel grounded and sturdy through British and Irish singletrack. With 140mm of fork travel and 145mm in the rear, the MTR 8.6 is ready to soak up rough terrain. The 66 degree head angle is a degree slacker than the outgoing model and reach has been increased across all sizes to make for a longer, more planted bike.
The little things that matter

With Chris Boardman as Chairman of the company, Boardman have a wealth of experience to draw on and are always looking at the fine details when developing bikes. The new MTR platform has been designed around real-world trail riding, with a geometry and suspension set up honed through countless hours of testing. They’ve also worked to develop a range of saddles using advanced pressure mapping and real-world testing to make sure any saddle on a Boardman bike is going to suit the majority of people riding it.


Boardman MTR 8.6 Mountain Bike 2021 Extra Info

  • FREE build
  • Unlimited lifetime safety checks
  • Lifetime guarantee on frames and rigid forks*
  • CycleCare available

*Please see our T&C's here

Boardman MTR 8.6 Accessories

Topeak Defender Mudguards will ensure you stay drier and cleaner for much longer when out on your rides. The Lazer Chiru MIPS Helmet both looks the part and has features such as MIPS to ensure great safety should you have to come to rely on the helmet. And to ensure you can dial both your front and suspension we recommend a Halfords Shock Pump. Side-Entry bottle cages work best with the MTR frame, we've tried and tested the Elite Prism Carbon Cage and we loved it!

Maintain your Boardman MTR 8.6

If you plan on using your Boardman MTR 8.6 regularly, then we’d recommend our CycleCare services to make sure your new bike stays in top shape. Just like the annual service you’d get done on your car, we’ll check your bike’s components depending on the service you choose, then make any repairs and make sure your bike is safe to ride. On the subject of safety, you’re also welcome to bring your Boardman MTR 8.6 to any Halfords store for unlimited safety checks at any time.

Our Guarantee

Thanks to our confidence in the high quality bikes we sell, Halfords offer a lifetime guarantee on all frames and rigid forks*, so you can ride your Boardman MTR 8.6 safe in the knowledge that it’s built to last.

*Please see our T&C's here
Check out the rest of the Boardman MTB bike range

Trading up?

Trade up to MTR 8.8 for:
  • Upgraded Shimano Deore M5100 11-speed drivetrain with a 11-51T cassette
  • Rockshox Recon front fork and a lockable Rockshox Deluxe Select+ rear shock

Size Guide

Click to find out how to measure your inside leg

Size S (16") M (17") L (18") XL (19")
Height (cm) 162 - 170 168 - 177 175 - 185 183 - 195
Inside Leg (cm) 72 - 82 74 - 85 78 - 89 82 - 94

Geometry Table

Size S (16") M (17") L (18") XL (19")
Reach 440mm 455mm 475mm 490mm
Seat Tube C-T 410mm 430mm 460mm 480mm
Effective Top Tube 598mm 615mm 638mm 655mm
Head Tube 90mm 100mm 110mm 120mm
Head Angle 66° 66° 66° 66°
Seat Angle 75.5° 75.5° 75.5° 75.5°
Chainstay Length 440mm 440mm 440mm 440mm
Fork Offset 42mm 42mm 42mm 42mm
 Bottom Bracket Drop 33mm 33mm 33mm 33mm
Crank Length 170mm 170mm 170mm 170mm
Stem Length 45mm 45mm 45mm 45mm
Handlebar Width 780mm 780mm 780mm 780mm

Additional Information

The above images and description serve as an example. Current disruption in the global supply network mean that specific components may not be available. If that occurs, we may replace those components with similar parts of the same or higher quality, provided that any such substitutions do not negatively affect the overall quality or use of the product.