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Curve Cycling

Big Kev

Big Kev

Regular price $9,799.00 AUD
Regular price Sale price $9,799.00 AUD
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Customers outside Australia are liable for import fees which can add 25-30% for EU and UK shipments (compared to Australian RRP).
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For info on availability, please contact,
call us on 03 9088 0274.

Alternatively, Enquire Now.


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Free International Shipping for all Framesets, Complete Bikes, Forks, Wheelsets, Bars and Rocket Pooches is included in the sales price (*excludes Belgie DISC Ultegra)

All other products are subject to shipping charges calculated at checkout. See our Shipping Policy for further details.


Check HERE for further info regarding custom paint, bike set up and more.

Is the frame compatible with SRAM T-Type (Transmission) derailleurs?

The short answer is yes, but some chainring sizes may not be suitable for some frame sizes.

Please refer to this chart. 

The longer answer and a bit of background as to why this chart is needed:

When the Big Kev frame was developed, the T-type (Transmission) system had not yet been announced by SRAM, and the dropouts were designed to work with the UDH hanger while maintaining our regular "hooded" dropout design. When we learned about the T-type development, the Big Kev was already in production and it was too late to make any changes.

The T-type spec prescribes that a certain amount of clearance is needed for the derailleur's "full mount" bracket to be able to swing forward in order to accommodate a range of chainstay/chainring/chain length combinations. This forward swing may be impeded by the outside hood of the dropout on some frame size/chainring combinations on the Big Kev - so we made this chart to help identify the combinations where interference may be possible and extra diligence is needed during setup.

Always use the SRAM AXS app, online calculator, or the Eagle Transmission user manual for final verification of chain length, setup cog and setup key position.

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Big Kev is here!

Big Kev is the progressive gravel bike you have been waiting for. Curve was one of the first brands to bring gravel bikes to the market. Now, it’s time for gravel-plus.

Designed as the new benchmark for adventure cycling, Big Kev features wide 29-inch tyre clearance giving you the comfort and confidence for weekend gravel missions or the reliability and speed to tackle bucket-list bikepacking adventures like the Tour Divide.

  • It’s Time for Gravel-Plus

    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.

  • Light, Strong, Durable

    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).

  • Adventure Ready

    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.

  • More Storage. More Mounts. More Groupset Options

    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.

  • Want to Carry More?

    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.

  • Bento Box + Extra Storage Space

    The Big Kev features Bento Box mounting points on the top tube allowing riders to secure belongings in most bolt-on bike bags.
    For even more carrying capacity, a framebag might the way to go.

    To make sure current, prospective or custom bagging fits your frame size please see our Bagmaker Drawing page.

Big Kev Specifications


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

Groupset Options

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


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 int. 85.5

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

Finishing Kit

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

Please Note: Spec subject to change according to availability

Customer Reviews

Based on 5 reviews

Took my Big Kev to do the Roam Scotland Rally, crossing rugged grounds of the Cairngorms nationaal park. Nothing could stop this Ti machine! Crashed 3x but no harm done. Some blood, some mud and a big grin knowing this is not a carbon frame and also has the T-Type transmission without a derailleur hanger. Ride on!

Matt from QLD
A bike for the apocalypse

Doing longer rides on rough fire trails, I had a need for a bike that could go for days carrying a bunch of stuff, be more efficient than my MTB, and have a bit more stability than your average gravel bike.

After a lot of research I settled on Big Kev. It was a bit of a commitment step, but no regrets. This thing is a different proposition to my other bikes, it can take on pretty much anything and super fun in undulating trails.

Tracy Garvin
I love this bike!

I loved my Big Kev from the start, but it wasn’t until we rode together in some extremely challenging conditions during a bike packing race that I realised how awesome he truly is. Big Kev coped with everything thrown at him - thick sticky mud and rain and the geometry proved so comfortable to ride. The 29ers roll super smoothly, even when I was carrying extra gear for overnighters. I love the dinner plate on the 10-52t cassette, and combined with the traction of the wheels, it gets me up and down almost anything with more confidence and comfort. Being more of a road bike rider, the extra confidence on the gnarly trails makes for a much more relaxed ride which is a big plus. Big Kev you’re the best!

A big shout out to the Curve crew who have been incredibly kind in helping me choose the right bike and size and helping me set up everything. I love how Curve values their community and shows care.

David Rossi
Big Kev takes gravel to the next level

Over time I've gravitated towards gravel from road bikes, and Big Kev is as far as you go with gravel before you might as well be on a mountain bike. It's amazing that it's built around road components, but can take 29er tires big enough to roll over almost anything.

I often load mine up with a small pannier rack, a full set of frame bags, plus food and water to carry gear for 2 people and head off on adventures, and I found Big Kev handles the weight a lot better than my previous steel bike.

Big Kev is simply functional and durable, built around all the current standards like T47 and UDH, and being Ti it could last forever. Long live Big Kev!

Peter Cooper
Big Kev

It is always a little nerve wracking buying a bike of this value off the Internet, without a first hand evaluation, but I couldn't be more pleased with my purchase. The big box arrived and I had imagined a trip to my local bike shop to get assembly organised particularly the tubeless wheels but slowly the bike came together without a glitch. The wheels came pre inflated so no problem there. Bluetooth derailleurs solved another with a simple bolt on solution, so before you know it I had my beautiful shiny titanium machine, looks so good with those carbon wheels. The bike has performed faultlessly on a variety of explorations around home and on the Brisbane Valley Rail Trail. It is great to feel all the power going into the trail instead on being muted with suspension. The bike rolls beautifully and gets faster over time. The only change I made was the saddle but that's just a personal fit thing. I'm looking forward to many thousands of K's exploring on this bike, and looking really good while I do it! (at least the bike will). Thank you Curve for facilitating BK's early arrival and bringing me such an amazing Xmas present.

Big Kev - One Year Review

The arrival of this titanium gravel machine into my life wasn’t just any New Bike Day (although they’re all exciting!), this was the delivery of the bike I would take on a bike ride called the Tour Divide...