The GMX+ is our ultimate titanium bikepacking bike. Built for any off-road adventure, the GMX+ can accommodate up to 3.0" tyres and has multiple mounting points to carry water or extra gear for those longer adventures.
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The GMX+ is inspired by the intrepid Overlanders of the 1890s, who covered incredible distances without support across the harsh Australian outback. We have designed a bike that can do the same, but with much more ease using today's modern technology. The GMX+ is an adventure bike designed with wider tyre clearance thanks to our innovative carbon fork, ultra-wide drop bars for stability, and numerous mounting points for storage or water.
Tested in real-life conditions, the original GMX was designed for Race to the Rock, a harsh, remote desert race in Australia. With testing came improvements to the bike geometry and fork clearance, and so the GMX+ was born.
In recent years, the GMX+ has taken on some of the most challenging races worldwide, including Tour Divide, Silk Road Mountain Race, and Race to the Rock.
The GMX+ lets you carry more water or load more gear. The titanium frame includes mounting points on all rear stays and offset on the downtube, allowing riders to run a full-size frame bag plus 1-litre bottles to either side. The Seek 430 fork has 6 x M5 mounting points on each side, with a recommended load capacity of 3 kilograms across three mount points.
Our ultra-wide drop bar, the Walmer Bar, is the perfect companion to the GMX+ with rugged off-road riding. This flared drop bar is available in various sizes - including 46BP, 50BP, 55, 60 cm (hood measurement, +15 cm for the drop) - and will provide the rider with more stability, hand positions, and storage space than other available handlebars.
Purchase a Walmer Bar with your GMX+ frameset online for AUD 100, save $89!
The Seek 430 fork allows clearance for up to 29 x 3.0" plus-size mountain bike tyres (27.5 x 3.0" in sizes XXS–XS). A bigger tyre means more traction and less rolling resistance, letting you ride efficiently across more tricky terrain such as sand, rocks, and snow.
The GMX+ ranges from size XXS to XXL, including an 'extra medium' option. Size SM–XXL is designed around 29" wheels, while XXS and XS frames run 27.5" wheels, ensuring geometry proportions and handling characteristics are consistent across all sizes.
Titanium Curve GMX+
1x drivetrain compatibility only (Max Chainring: 38t round / 36t oval)
Stainless steel hardware
12 x M5 mounts (6 per side)
430 mm axle to crown
55 mm offset
15 x 110 mm axle
180 mm direct post mount brake (Bolt Length: 17 mm)
1.5" tapered steerer
|Curve Headset:||44/56mm Zero-Stack|
|Curve Alloy Seat clamp:||34.9 mm|
Curve Cocky headbadge
|Rider Height Range - cm||148-157||154-163||160-170||166-178||170-183||175-187||184-194||190-200|
|Rider Saddle Height - mm from BB||610-670||650-705||690-735||720-765||735-780||745-795||775-825||805-865|
|Curve GMX+ Titanium||XXS||XS||S||M||XM||LG||XL||XXL|
|Effective Top Tube (Horizontal)
|Seat Tube (Centre to Top)
|Seat Tube Angle - °
|Head Tube Angle - °
|Chain Stay Length
|Head Tube Length
|SRAM Freagle AXS eTap 12sp|
|Shifter/Levers||Force eTap AXS 12sp - LHR / RHF|
|Brakes||RED eTap AXS HRD Flat Mount Disc CLX R CL Rotors 180F/160R|
X01 Eagle DUB - 34t
Note: Max chainring size is 38t round / 36t oval
|Bottom Bracket||Curve T47 DUB External Cup|
|Derailleur||X01 Eagle AXS 12sp|
|Cassette||XG 1295 Eagle 10-52t|
|Chain||X01 Eagle 12sp
|Dirt Hoops - WIDER 40
|Curve carbon off-road wheels 30 mm internal, 40 mm external, 27 mm deep Hub: DT Swiss 350 28H Centre Lock Spokes & Nipples: Sapim CX Ray & Brass|
Curve Walmer Bar
Curve Remlaw Bar
|Stem||Zipp SC SL|
|Seat Post||Zipp SC SL 31.6mm 0º Offset|
|Saddle||Fi'zi:k Vento Argo|
|Tyres||WTB Ranger 29" x 3.0 / 27.5 x 3.0|
|Bar Tape||Curve black anti-shock|
|Please Note:||Spec subject to change according to availability|
|What are the main differences between the original GMX and the GMX+?||The GMX+ is a completely new design with a much slacker geometry, designed around a 1x drivetrain, more cage mounting points (7 on frame, plus fork mounts), boost spacing (15x110 & 12x148 mm TA) with room for 3.0" tyres and a completely new non-suspension corrected carbon fork. We've also designed our Walmer Bars to complement this platform perfectly. We’ve rerouted the cables to the down tube instead of the top tube, added a T47 BB shell and an oversized seat tube for added stiffness.|
|Can I run a suspension fork on the GMX+?||No, it'll mess with the geo. You can run a squishy fork on the UpRock or the DownRock.|
|How do I get the Walmer Bar discount?||Add a GMX+ Frameset and a set of Walmer Bars to your cart and the discount will automatically apply at checkout. You can find Walmer Bars in the Parts section of our webshop.|
|When shipping direct, how does a complete bike come finished to me?||Each bike is built and boxed to "90% complete" with the fork steerer uncut and bar tape is not wrapped. We do this so each individual can personalise their setup options. This final procedure should be performed by an experienced bike mechanic.|