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Curve move in and out of stock very fast. If we don't have the model/size/spec you are chasing, please get in touch because it is likely something we can order in for you.

Open Monday to Saturday
Professional Workshop
MTB & Road Bikes for Hire
Gift Vouchers Available
  • Carry More

     

    The GMX+ Steel lets you carry more water and pack more gear. The steel frame includes mounting points on the rear stays and offset mounts on the downtube, allowing riders to run a full-size frame bag plus 1 litre bottles to either side. The Seek 430 FM fork has 4 x M5 heavily reinforced mounting points on each side, with a recommended maximum load capacity of 7 kilograms across three mount points (on each side). You read this correctly - it's a carbon fork able to carry a remarkable 14 kilograms of load safely!

     

  • Class Leading Carbon Fork

     

    Our Seek 430 FM fork has been made to work in unison with our GMX+ (Ti & Steel) framesets and our popular Walmer Bar and Remlaw Bar. It improves on the original Seek 430 fork with updated brake hose and dynamo cable routing, the introduction of flat mount brakes and the addition of four heavily reinforced M5 mounting points per fork blade that can carry up to a whopping 7 kg each (maximum) when secured across three mounts! That's a total of 14 kg that can be safely carried on the Seek 430 FM! To achieve this, we left the industry-standard rivnuts behind and instead developed our own unique thru-mounts, completely re-thinking the way the mounts are added to the fork blade.

     

  • Drop Bar, Flat Bar or Riser Bar?

     

    The GMX+ Steel can accommodate a drop bar or flat bar. Any wide drop bar, especially our Walmer Bar, will work with a shorter stem, as will our unique Remlaw Bar. Other flat bar designs will also work well, but may require a longer stem. Due to the low front end on the GMX+ Steel, which isn't corrected for suspension, an even more relaxed touring position is possible with a high-rise flat bar.

     

  • Frame Sizing

     

    The GMX+ Steel ranges from size XS to XL. Sizes SM–XL are designed for 29" wheels. 27.5" wheels are required for size XS to ensure optimal performance. For more info on the GMX+ geometry click HERE!



    There is ample room for bikepacking bags on all frameset sizes. To make sure current, prospective or custom bagging fits your frame size please see our Bagmaker Drawing page.

     

  • 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.

     

GMX+ Steel Specifications

 
 

Frame:

- Columbus Cromor & 4130 chromoly
- 7x cage mounts
- Rear rack mounts
- Clearance max 3.0" tyres
- 1x chainring only (Max 38t)
- 12 x 148 mm (boost) spacing
- 160 mm flat mount brake (with adapter)
- 27.2 mm ID seat tube
- T47 BB (73 mm)

Seek 430 FM Fork:

- Carbon construction
- Non-suspension corrected
- 8 x M5 mounts (4 per side)
- 430 mm axle to crown
- 55 mm offset
- 15 x 110 mm (boost) spacing
- 160/180 mm flat mount brake
- 1 1/8" - 1.5" tapered steerer

Curve Headset:

- 44/56 mm zero-stack

Other:

- Curve 29.8 mm Black Alloy seat clamp
- Curve Cocky Headbadge
- 15 x 110 mm front Relaxle
- 12 x 148 mm rear Relaxle
- Carbon steerer expander
- Headset spacers (33 mm total)
- Spare rear derailleur hanger
- Bolt on cable guides, incl. 2 x offset mount support guides
- Chainstay / Seatstay cage mount adapter (Size XS & SM)

 

Groupset Options 

 

SRAM Rival-Eagle eTap AXS 1 x 12
Shifter/Levers - Rival AXS eTap 1x12 sp - LHR / RHF
Brakes - Rival D1 HRD Flat Mount Disc // CL Rotors 180 mm front | 160 mm rear
Crank - GX Eagle DUB - 32t | XS-SM: 165 mm | MD-XM: 170 mm | LG–XL: 175 mm
Bottom Bracket - Curve T47 DUB 73 mm
Rear Derailleur - GX Eagle AXS Lunar 10-52t
Cassette - XG 1275 EAGLE 10-52t 12 sp
Chain - GX Eagle 12 sp

-

SRAM Apex-Eagle 1 x 12 Mechanical
Shifter/Levers
 -Apex 1x12 sp - LHR / RHF
Brakes - Apex Flat Mount Disc // CL Rotors 180 mm front | 160 mm rear
Crank - GX Eagle DUB - 32t | XS-SM: 165 mm | MD-XM: 170 mm | LG–XL: 175 mm
Bottom Bracket - Curve T47 DUB 73 mm
Rear Derailleur - Apex Eagle AXS Lunar 10-52t
Cassette - XG 1275 Eagle 10-52t 12 sp
Chain - GX Eagle 12 sp

 

Wheels

 

Dirt Hoops Alloy - 29” SM-XL / 27.5” XS
Curve alloy off-road wheels:

- 30 internal x 35 external x 19 deep
- Front Hub: SP Dynamo PL-8X 15 x 110 (6-Bolt) 28H
- Rear Hub: DT Swiss 350 28H 
-Spokes & Nipples: Sapim Race & Brass Secure Lock

 

Finishing Kit

 

Bars - Curve Walmer Bars
XS: 46 | SM: 50 | MD-XM: 55 | LG–XL: 60
Stem - SRAM Atmos 60mm
Seatpost - Zipp SC 0 Setback 27.2 mm
Saddle - WTB Silverado
Tyres - Mezcal III 29x2.6 / Ranger 27.5 x 3.0 TCS
Bar Tape - Curve black anti-shock



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Professional Workshop

Open Tuesday to Saturday

Tues, Wed, Fri 8.30-5.30; Thu 8.30-6.00; Sat 9.00-4.00

MTB & Road Bikes for Hire

Gift Vouchers Available

 

 

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