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The Digger delivers versatile gravel bike performance with the soul of a mountain bike. Equally at home on technical trails, fully laden bike packing adventures and commuting.
The Digger delivers versatile gravel bike performance with the soul of a mountain bike. Equally at home on technical trails, fully laden bike packing adventures and commuting.

2021 Nukeproof Digger 275 Comp Concrete Grey

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If for any reason you'd like to return a purchase you can do so for 30 days, using our straightforward returns process.

Our returns policy is valid for 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund for unwanted items.

Instructions on Returning Unwanted Items

Please use our returns form where possible - see above 'DOWNLOAD RETURNS PDF'

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Please use our returns form where possible.

If you do not have access to a printer, please make sure that all of the relevant information on the form is clearly written on a note or letter and included with the return.

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Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.

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Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.

We do not offer exchanges. Instead we ask you kindly to complete a new order for the desired replacement and return the unwanted item(s) for a refund. While this might seem more complicated, we can assure you it is by far the most efficient and fastest way to ensure that you receive the goods you require.

Any returns sent back requesting an exchange will be refunded in line with our returns process.


If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be mailed to you.

Please use our returns form where possible.

If you do not have access to a printer, please make sure that all of the relevant information on the form is clearly written on a note or letter and included with the return.

If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and s/he will find out about your return.

To return your product, you should mail your product to: Firetrail Ltd, Aboyne Castle Business Centre, Unit 3, Aboyne, AB34 5JP, United Kingdom.

Please use our returns form where possible.

If you do not have access to a printer, please make sure that all of the relevant information on the form is clearly written on a note or letter and included with the return.

We regret to inform you that we cannot be held responsible for returned goods that become lost or damaged in transit, so please obtain proof of postage or use a recorded delivery.

You will be responsible for paying for your own shipping costs for returning your item (unless we are dealing with a confirmed warranty issue).

2021 Nukeproof Digger 275 Comp Concrete Grey

Season : N/A

Brand : Nukeproof

Code : Digg275Comp21

What started during an intoxicated conversation some years ago, has ended up as a cult product in our range. Inspired by our athletes and their desire for a do-it-all training bike with something a little extra; it’s a versatile vessel, blending “gravel bike” performance with the soul of a mountain bike. With the capacity to add panniers, bike packs and mud guards; the Digger frame is suited for everything from big adventures in the wilderness to a bike that simply makes the usual mundane commute to work more interesting

New for 2021 is the addition of the latest gravel dedicated Shimano GRX 1x group set. Spec’d for simplicity and off-road performance with Shimano’s clutch derailleur 1x 11 speed set up (11-42t) drivetrain. The new Factory Digger also integrates its dropper post actuation in the Shimano brake lever to offer ultimate confidence when it gets technical on the trails. The Digger is again equipped with a “wider than average” drop handle bar for that mountain bike stance.

Both 2021 Comp and Factory models will come with WTB Sendero’s 650b Road Plus tyres where the latter also gets upgraded with DT Swiss G1800 Gravel wheels. To add comfort to the ride the Digger features a bolt through carbon tapered fork and cork-gel bar tape for compliance and improved feel on the trails/ gravel/ paths/ road.

The Digger yearns to divert you off the main path and create an adventure of any ride.


  • Adventure/ Gravel
  • Hydroformed Triple-Butted Aluminium
  • Designed to fit Mudguards and panier racks
  • 27.5" Road Plus (700c Compatible)
Technical Information
Nukeproof Digger 27.5” Road Plus or 700C compatible, custom triple butted hydro-formed Alloy, internal cable routing for dropper seat posts, threaded bottom bracket, 142mm x 12mm rear axle spacing

Nukeproof Digger carbon, 27.5” Road Plus or 700C compatible, Tapered Steerer, Rack Mounts, 12x100mm axle spacing

Nukeproof Neutron V2 hub, 12x100mm with a 27.5” WTB STi25 TCS 32H Rim

Nukeproof Neutron V2 hub, 142x12mm (Shimano freehub) with a 27.5” WTB STi25 TCS 32H Rim

WTB Sendero 650x47C Road Plus, TCS, Light Fast Rolling, Tan wall, Dual DNA Compound

Shimano RX-600, GRX, 1x 11 Speed, 170mm, 40T

Shimano GRX, RX-600 Levers

Shimano GRX, RD-RX812, 11 Speed, Shadow Plus

KMC X11 11-Speed, Anti-rust with Quick Link

Shimano CS-M7000 XT 11 Speed, 11-42T

Shimano GRX, RX-600 Levers with RX-810 Flatmount Callipers

Shimano RT66, 160mm

Shimano RT66, 160mm

Non Series AL-6061 480/500mm

Non Series AL-6061 480/500mm


Nukeproof Neutron, Black, 31.6mm, 400mm

Nukeproof Internal, IS42-28.6 - IS52-40

Black Cork Cushion Tape with Gel

WEIGHT (size medium)
9.73Kgs/21.4lbs (tubeless)
Sizing Information
2021 Nukeproof Digger Frame Geometry

(A) REACH385397403418
(B) STACK533553581600
(D) SEATTUBE LENGTH470490520550
(H) SADDLE OFFSET AT SADDLE HEIGHT179.16192.95206.73220.51
(I) HEADTUBE LENGTH105125155175
(J) HEADTUBE ANGLE71°71°71°71°
(K) CHAINSTAY LENGTH425425425425
(L) FRONT CENTRE596609.6625.8646.6
(M) WHEELBASE1011.51024.51039.51062
(O) BOTTOM BRACKET HEIGHT357.5357.5357.5357.5
(P) STAND OVER HEIGHT741762791.25817.58
(R) TRAIL76.3776.3776.3776.37
(S) FORK OFFSET45454545
(T) AXLE TO CROWN400400400400

*All dimensions in mm unless otherwise stated


Frame Material:Hydroformed 7046 Triple-Butted Aluminium
Fork MaterialHigh Modulus T700 HM-UD Carbon Tapered Steerer
Axle to Crown:400mm
Fork Offset:45mm
Wheels Size:27.5" (Will accept 700Cx42C)
Max Tyre Size:27.5"x47C/700Cx42C
Headtube:42-52 Tapered Integrated
Headset:IS42-28.6 - IS52.1/40
Seatpost:31.6mm (Internal Routing for Dropper Seatpost)
Seat Clamp:34.9mm
BB:Threaded 73mm BSA
Rear Hub:142x12mm
Front Hub:100x12mm
Rear Axle:M12-142*P1.5*164L
Front Axle:M12*P1.5*120L
Brake Mount:Flat Mount
Stem lengths:50cm:70mm /52cm:80mm/ 55cm:90mm/ 58cm:100mm
Protection:Kevlar Chainstay Protector
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