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(Some components in these photos may differ from the spec sheets. Please refer to the spec sheets below for accuracy)

Update: January 31st, 2021 - Specs & Price Change Notice

Due to the extensive lead times being offered by certain components manufacturers, the original specifications/build kits for this bike have been changed. So that we may be able to deliver complete bikes as scheduled, per our shipping updates, certain parts have been swapped out for those with shorter lead times. In each case, we have attempted to make substitutions that do not compromise the integrity of each build. Pricing has changed accordingly.

Important: Notwithstanding any change of specifications, pricing on all bikes will have to be adjusted to reflect the increases in the cost of manufacturing and shipping. This is unfortunate, but no manufacturer - large or small - will be unaffected by the strain on the global supply chain. We are doing our absolute best to keep our costs and timelines as close to original estimates as possible.

The price changes are effective immediately, and have been applied to all affected bikes, including those on pre-order.

(2020 Build not as shown. this is a 2019 build)

There’s one in every family. That one that feels excluded from the bunch. If you’re down with that attitude because you like to go your own way, then we’d like to introduce you to the rowdiest member of the RSD family – the MiddleChild.

Some of our bikes are great at getting the job done – real authorities. The 29/27.5+ MiddleChild gets it done, but the only thing on the agenda is playtime. Every detail on this premium-quality handmade steel frame screams “skip work and let’s party!”

  • Titanium 3AL 2.5V Butted and Heat Treated

  • full CNC-machined custom yoke that’ll take 2.8″ tires (or up to 2.6″ x 29)

  • 64.5 degree head tube and 74 degree seat tube angles paired with 140mm fork –  that aggressive geometry for both climbing and sending choice descent lines

  • boost spacing and short chainstays (adjustable from 415mm – 430mm) for super stability and loads of confidence in the rough stuff

  • Choose from either Duroc 40 27.5+ wheels with Nobby Nic 27.5×2.8 Addix SpeedGrip tires or Duroc 35 29in wheels with Maxxis Minion DHF 2.5 Front and Aggressor 2.5 Rear


The MiddleChild is a purely new-school ‘Enduro’ hardtail…

…that will never get left behind.

27.5+ SLX Build

  • Frame: 27.5+/29 Titanium Butted and Heat Treated

  • Fork: Rockshox Pike Select RC 27.5+/29 140mm 51mm

  • Headset: Cane Creek ZS-44

  • Handle Bar: Race Face 35mm Turbine R 780mm

  • Stem: Race Face 35mm Turbine R 50mm

  • Grips: Lizard Skin Northshore

  • Front Wheel: Sun Ringle Duroc 27.5x40mm Front 15x110mm Boost

  • Rear Wheel: Sun Ringle Duroc 27.5x40mm Rear 12x148mm Boost

  • Crank: Race Face Turbine Cinch 175mm DM

  • Chain Ring: Race Face 30T Ring NW

  • BB: Race Face 73mm BSA

  • Chain: KMC 12spd

  • Cassette: Shimano SLX 10-51T 12spd

  • Rear Shifter: Shimano SLX Trigger 12spd

  • Rear Derailleur: Shimano SLX Long Cage 12spd

  • Brakes: Shimano SLX 4 Pistons M7120

  • Rotors: Shimano SLX 180mm

  • Saddle: WTB Volt Comp 142mm

  • Seat Post: Race Face Turbine / KS LEV Dropper (S 125mm, M & L 150mm, XL 175mm) with SouthPaw Lever

  • Rear Axle: SRAM 180mm Rear Maxle Ultimate 12x148mm

  • Tires: Schwalbe Nobby Nic 27.5 x 2.8 Addix Evolution Speedgrip


Frame Weight with Sliding Inserts and Hardware
(M): 5 Lbs
(L): 5 Lbs 3 oz


Complete Bike Weight 
(M): 28 Lbs 8 oz with Dropper and Tubes. Tubeless 27 lbs 12 oz
(M): 27 Lbs 12 oz with Turbine Seat Post and Tubes. Tubeless 27 lbs


Sizes: Sm, Med, Lrg & Xlrg


Finish: Scotch Brite Raw Titanium


Complete: $4699.00 CAD / $3749.00 USD + shipping
Complete w/Dropper : $4999.00 CAD / $3999.00 USD + shipping
Frame Only: $2499.00 CAD / $2199.00 USD + Shipping


Included with the Frame Only option:
Cane Creek ZS-44 Headset for tapered steerer tube
Rear 12x148mm Sliding Drop-out Inserts
SRAM Rear Maxle Ultimate 12x148mm
Seat Post Clamp

Prices and Specs are subject to change without notice.

Note: We are unable to accommodate any single component substitution from one build to another, BUT we can accommodate the substitution of an entire build. Pricing will be dependent on the build and/or frame material at RSD’s sole discretion. All prices listed are Minimum Suggested Retail.

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RS-291 Chromoly

RS-291 Chromoly

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How about the latest version?



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