Curve - GXR4 (AKA Kevin)

Meet the latest GXR a.k.a. Kevin

One of the first gravel-specific bikes released, the Curve GXR model has been around since well before gravel became cool. Now, with wider tyre clearance, improved mounting options and UDH compatibility, the latest version of our Swiss Army Knife of bikes is more versatile than ever.

We have been ahead of the Curve when it comes to gravel, and the GXR has years of adventure cycling experience woven into its DNA. The Curve titanium GXR has been tested heavily on gravel adventures worldwide. Across South America, New Zealand, Switzerland, Swaziland, and more, the Curve squad has traversed the globe on this magnificent bicycle.

Originally a playful jab at the bike industry's bike naming terminologies, the name “Kevin” soon caught on, and we couldn’t resist making it official. Kevin, the reliable Aussie all-rounder, is here to stay as a permanent nickname for our beloved GXR.

Wide Tyre Clearance
The GXR has been designed with gravel cycling versatility in mind. While the GXR geometry is optimised for 700c x 44mm tyres, you can go as wide as 50 mm tyres on 700c wheels. In 700c mode with narrower tyre options, Kevin is ready for fast gravel missions, but you’ll be surprised how capable Kevin is on chunkier terrain with a 50 mm tyre. With 650b (27.5”) wheels you can move into gravel-plus territory with 2.2” tyres which offer plenty of comfort for the most rugged gravel adventures. Curve has the above wheel options in carbon and aluminium available and ready for complete Kevin builds.

Ready for Adventure
Our Ride 415 VGM fork has taken load carrying to the next level, with a 8 kg rating on each fork leg. That’s a total carrying capacity of 16 kg. Featuring three cleverly designed mounts on each fork leg, the Ride 415 VGM fork can accommodate anything from extra water bottles, our Rocket Pooches, or other micro-pannier or fork-specific bags.

While we favour 1x drivetrains, Kevin can be set up with a 2x drivetrain without hassle. With SRAM UDH compatible dropouts, Kevin is able to handle the widest range of groupset options currently available.

More Mounting Points
The Curve Kevin comes equipped with rear rack mounts, fender mounts, 3 x bidon mounts, and top tube “bento mounts”. With extra tyre clearance, and a comparatively long wheelbase for the gravel genre which offers a more stable platform, Kevin is ready for epic day rides or multi-day bikepacking adventures, not just smooth gravel cruising.

There is ample room for bikepacking bags on all frameset sizes.

Frameset
Frame - Titanium Curve GXR4. At the core of each frame is a 3Al - 2.5V Grade 9 aerospace grade titanium tubeset. This grade is optimal for bicycle frames and chosen for its fine balance of stiffness, compliance and durability.

Fork - Curve Ride 415 VGM carbon fork

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 SRAM UDH derailleur hanger

Groupset Options
SRAM Force E1 X0 T-Type

Shifter/Levers - Force E1 AXS 12 sp - LHR / RHF

Brakes - Force Flat Mount Disc // Centrelock Rotors 160 mm

Crank - Force E1 WIDE DUB - 38t | XXS-SM: 165 mm | MD: 170 mm | LG-XXL: 175mm

Bottom Bracket - T47 DUB internal 85.5 mm

Rear Derailleur - X0 T-Type 12 sp

Cassette - XS 1275 T-Type 10-52t

Chain - GX T-Type 12 sp

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SRAM Rival E1 GX T-Type

Shifter/Levers - Rival E1 AXS 1x12 sp - LHR / RHF

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

Crank - Rival E1 WIDE DUB - 38t | XXS-SM: 165 mm | M: 170 mm | LG–XXL: 175 mm

Bottom Bracket - T47 DUB internal 85.5 mm

Rear Derailleur - GX T-Type 12 sp

Cassette - XS 1275 T-Type 10-52t

Chain - GX T-Type 12 sp

Wheels
G4T 45 - 700C

Curve carbon all-road wheels:

- 21 mm internal, 28 mm external, 45 mm deep

- Hub: DT Swiss 350 24H Centrelock

- Spokes & Nipples: Sapim CX Ray spokes and brass nipples

Dirt Hoops - 29"

Curve carbon off-road wheels:

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

- Hub: DT Swiss 350 28H Centrelock

- Spokes & Nipples: Sapim CX Ray spokes and brass nipples

Finishing Kit
Bars - Curve Walmer Bar
XXS: 43 | XS-LG: 46 | XL–XXL: 50

Stem - Zipp Service Course
XXS–S: 70 mm | M–L: 80 mm | XL-XXL: 90 mm

Seatpost - Zipp SC 0 Setback 27.2 mm

Saddle - Prologo Dimension 143

Tyres - Vittoria Terrano Mixed T50 - 700c x 50 mm

Bar Tape - Curve black anti-shock

Please Note: Spec subject to change according to availability

All bikes purchased from iRIDE will have been pre-assembled by our mechanics and test ridden. You will also receive a multi point checklist of all the safety checks and bike build elements we work through to ensure you bike is correctly assembled, and then tested so that it runs as it should. Bikes being sent to a customer who is unable to collect it from iRIDE, will have it boxed, wheels, saddle and bars generally off and re-packaged.

The delivery of bikes will be organized once a freight fee can be determined based on weight and delivery location.

Assembly should take no longer than 10-20 minutes. It is recommended that a skilled mechanic assemble, or check the bike. If possible your local bike shop is likely best placed to do this from a safety perspective to ensure all is as it should be. If a rider is having any issues we can hook up an online video chat, or talk over the phone. If this service is required email us at workshop@iride.net.nz to organise a time that suits all parties.