The Yuma is a juvenile gravity bike, which is especially tailored to the characteristics and needs of riders with a body height taller than 1.30m and the respective low body weight. Delivered with 24″ wheels, the Yuma can be converted to 26″ wheels using the “Grown Up” kit, which is available separately.

Choose your model

Build Kits

We will help you on your way to your personal dream bike. Our options are only a preliminary recommendation, because your needs are as individual as you are. We have put together three pre-configured models for you. In our configuration tool, however, you can still adapt every single part of all models to your wishes. Have fun building your dream bike!


  • Fork: Manitou Machete 140mm
  • Shock: RockShox Deluxe R 145mm
  • Front Brake: SRAM Guide T 203mm
  • Rear Brake: SRAM Guide T 180mm
  • Saddle: 1st Ride Enduro
  • Seatpost: Propain Seatpost
  • Wheels: 1st Ride Enduro 24″
  • Crank: 1st Ride 155mm
  • Derailleur: SRAM GX Eagle (1×11)
  • Trigger: SRAM GX Eagle (1×11)
  • Casette: SRAM XG1150
  • Handlebar: 1st Ride 680
  • Stem: 1st Ride 40
  • Tires: VEE Flow SNAP 24″
  • Weight: 13,0 kg

Frame Sizes

The frame size is an essential part of the bike performance and above all of the riding fun. Select your required frame size from the table. If you stand between two sizes, then you only have to decide whether you like it playful or smooth running. For smooth running choose the larger frame size, for playful the smaller.

Technical Data

Shock length 185 mm
Shock travel 55 mm
Shock mount Top: Trunnion / Bottom: 8 x 25 mm
Rear wheel travel 145 mm
Bottom bracket BSA 73 mm
Brake mount Postmount 160
Seatpost diameter 31,6 mm
Headset (S.H.I.S) Tapered - Top: IS42 / Bottom: IS52
Rear wheel axle 148 mm x 12 mm (X12)
Front derailleur none
Chainline 52 mm (Boost)
Chainguide mount ISCG 05
Wheel size 24", 26"
Maximum fork travel 150 mm
Frame weight 2,8 kg


24" 26"
Frame height (A) 352 mm / 14" 352 mm / 14"
Wheelbase (M) 1.092 mm 1.104 mm
Top tube length (G) 529 mm 529 mm
Fork offset (B) 42 mm 42 mm
Fork length (C) 520 mm 520 mm
Chainstay length (L) 408 mm 420 mm
Reach (E) 380 mm 380 mm
Stack (F) 553 mm 553 mm
Head angle (J) 65° 65°
Seat angle - real (H) 73,5° 73,5°
Seat angle - effective (I) 75° 75°
BB offset (K) 3 mm 3 mm

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United States