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 4 sizes - 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.
The GMX+ can accommodate a drop bar or flat bar. Use either a drop bar, such as our WALMER Bar, together with a short stem. Or our flat bar, the REMLAW, replicates the same reach position as a drop bar, therefore there is no need for a longer stem like many other flat bar options.
|Curve GMX+ Frame:||3Al - 2.5V Aerospace Grade 9 titanium
7x cage mounts
Rear rack mounts
Clearance max 3.0" tyres
12 x 148 mm axle spacing
160 mm direct post mount brake
|GMX+ Fork:||Carbon construction
Stainless steel hardware
12 x M5 mounts (6 per side)
430 mm axle to crown
15 x 110 mm axle spacing
180 mm direct post mount brake
1.5" tapered steerer
|Curve Headset:||44/56 mm Zero-Stack|
|Curve Alloy Seat clamp:||34.9 mm|
|Walmer Bar option:||Curve Walmer Bar
Ultra wide flared drop bar
Sizes 46BP, 50BP, 55 or 60cm
(Add to cart for discount)
|Other:||Curve Cocky Headbadge
15 x 110 mm front axle
12 x 148 mm rear axle
Bolt-on cable guides
|Rider Height - Range in cm||148-157||154-163||160-170||166-178||175-187||184-194||190-200|
|Rider Saddle Height - mm from BB||610-670||650-705||690-735||720-765||745-795||775-825||805-865|
|Curve GMX+ Titanium||XXS||XS||S||M||XM||LG||XL||XXL|
|Effective Top Tube (Horizontal) - mm||519||548||582||610||625||640||668||697|
|Seat Tube (Centre to Top) - mm||420||470||520||550||565||580||610||640|
|Seat Tube Angle - degrees||74.75||74.75||74.75||74.75||74.75||74.75||74.75||74.75|
|Head Tube Angle - degrees||68||68||69||69||69||69||69||69|
|Chain Stay Length - mm||440||440||460||460||460||460||460||460|
|BB Drop - mm||75||75||90||88||88||85||85||85|
|Wheel Base - mm||1056||1086||1125||1156||1172||1189||1219||1250|
|Head Tube Length - mm||115||130||145||160||168||177||192||207|
|Reach - mm||365||390||415||440||453||466||491||516|
|Stack - mm||564||578||612||623||631||637||651||665|
|Front Centre - mm||622||653||674||705||720||367||767||797|
|Stand Over - mm||750||781||824||849||863||876||897||918|
|What are the main differences between the original GMX and the GMX+?||The GMX+ is a completely new design with a much slacker geometry, more cage mounting points (7 on frame, plus fork mounts), boost spacing (15x110 & 12x148mm TA) with room for 3.0" tyres and a completely new non-suspension corrected carbon fork. We've also created our own ultra wide drop bars (Walmer Bars!) designed to complement this platform. 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, the GMX+ is designed around the rigid Seek 430 fork only. You can run a suspension fork on the DownRock.|
|How do I get the Walmer Bar discount?||Add both a GMX+ Frameset and a set of Walmer Bars to your cart and the discount will apply automatically at checkout. You can find Walmer Bars in the Parts section of our web shop.|
|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.|