Curve Big Kev Dirt Hoops Carbon 29

A larger diameter means more comfort on rough terrain. With Big Kev, we have committed to the 29-inch wheel platform. With the new Ride 415 carbon fork, Big Kev is optimised for 2.1” tyres*, with a maximum width of 2.35” on the rear** and even wider, up to 2.4”, on the front for extra control.

For less rugged missions or extra speed on fast gravel tours, you can slim down to 2.0” tyres for faster rolling. Gravel-plus means you can take on more than just pristine gravel roads. Big Kev gives you the flexibility to get more adventurous.

* Tested with a Vittoria Mezcal 29 x 2.1" tyre on a 25mm internal width rim.

** Size SM and up. Tested with a Vittoria Mezcal 29 x 2.35" tyre on a 25mm internal width rim. This is the maximum we have tested. Be warned - mud clearance is extremely limited with such a wide tyre choice.

With a titanium tube set carefully selected and finely tuned for weight, stiffness and shape, Big Kev is built to last. We’ve proven this with industry-standard MTB-level testing, even with the lightness of titanium. 

The detailing on Big Kev takes Curve bikes to the next level. A custom yoke, with asymmetrical chainstays and dropouts, allows super wide tyre clearance with a road Q-factor. This exquisite yet complex rear-end, tied together with an 85.5mm bottom bracket shell, provides a sturdy platform under load. The dropouts are the first in the Curve range built around the SRAM Universal Derailleur Hanger (UDH).

Let’s face it, to tackle the biggest bikepacking adventures with confidence, you need a bigger tyre. A narrow gravel tyre won’t cut it – no one wants to slash a sidewall on day one or walk a bike up a rocky climb due to lack of traction. Big Kev gives you all the benefits of a drop bar, but with the comfort and traction of a gravel-plus tyre.

Whether it’s single-day gravel missions, multi-day flashpacking, or racing the Tour Divide, Big Kev is ready for what you have planned.

Big Kev is built with a large main triangle in comparison to other 29er formats to accommodate full-size frame bags for extra storage, even on smaller sizes. With three bidon mounts, rear rack and fender mounts, and 1x groupset options (boost cranks are not required), Big Kev has a variety of riding styles covered.

Our Ride 415 fork has offset adjustability to fine-tune your ride. In addition, the 4 x M5 mounts on each leg allow you to carry Rocket Pooches, extra bottles or fork-specific bags.

With a wide range of frame and fork mounted rack systems on the market, and with more appearing every week, it is important to understand which rack systems are compatible with your Curve frame and fork, and how to mount them correctly in order to ensure safe riding, avoid damage and voiding your warranty. Before mounting a rack, we strongly recommend you get in touch with us to confirm compatibility and the correct mounting procedure. This will minimise the risk of injury, product damage and voiding your warranty. Your local Curve dealer, or the team at Curve HQ, can also help you select a rack system and mount it to your bike for you.

Frame - Titanium Curve Big Kev

Fork - Curve Ride 415

Headset - Curve Integrated 42/52 mm semi-internal

Seat Clamp - Curve Alloy 31.8 mm

Other - Curve Cocky Headbadge, 12 mm Front & Rear Axles, spare derailleur hanger

SRAM Feagle AXS 1 x 12 sp

Shifter/Levers - Force AXS 12 sp - LHR / RHF

Brakes - Force AXS Flat Mount Disc // CLX R CL Rotors 160 mm

Crank - Force DUB - 38t | XXS-SM: 165 mm | MD-XM: 170 mm | LG-XXL: 175 mm

Bottom Bracket - Curve T47 DUB int. 85.5

Rear Derailleur - X01 Eagle AXS 12 sp

Cassette - XG 1275 EAGLE 10-52t

Chain - GX Eagle 12 sp

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SRAM Rival-Eagle eTap AXS 1 x 12

Shifter/Levers - Rival AXS 1 x 12 sp - LHR / RHF

Brakes - Rival Flat Mount Disc // CL Rotors 160 mm

Crank - Rival D1 DUB WIDE- 38t | XXS-SM: 165 mm | MD-XM: 170 mm | LG–XXL: 175 mm

Bottom Bracket - Curve T47 DUB ext.

Rear Derailleur - GX1 Eagle AXS Lunar 10-52t

Cassette - XG 1275 EAGLE 10-52t 12 sp

Chain - GX Eagle 12 sp

Dirt Hoops - 29"

Curve carbon off-road wheels:

- 25 mm internal, 35 mm external, 27 mm deep

- Hub: DT Swiss 350 28H Centre Lock

- Spokes & Nipples: Sapim CX Ray & Brass

Bars - Curve Walmer Bars
XXS: 43 | XS-MD: 46 | XM–XXL: 50

Stem - Zipp Service Course
XXS–SM: 70 mm | MD–LG: 80 mm | XL-XXL: 90 mm

Seatpost - Zipp SC 0 Setback 27.2 mm

Saddle - Fi'zi:k Vento Argo

Tyres - Vittoria Mezcal III 29 x 2.1"

Bar Tape - Curve black anti-shock