MiddleChild Chromoly
All customers with pre-orders have been contacted, and have been made aware that the shipments of both bikes are arriving together from overseas. It was also previously stated that Mayor v5 bikes will ship first, and that the queue has been determined by which orders were received, first to last.
For those of you with MiddleChild 2020 orders, we ask that you please remain patient while we undertake Mayor fat bike shipments. Our priority is to ensure that everyone's orders are fulfilled in the shortest time possible, so during this hectic busy period, we may refrain from responding immediately to email inquiries, as is our custom. We thank you for your continued patience and understanding, and ask that you stand by for updates which will surely be forthcoming to all of you with pending orders.
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.
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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.
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The price changes are effective immediately, and have been applied to all affected bikes, including those on pre-order.
Despite the many and lengthy delays hampering bike industry supply chains, we have managed to complete production on the Steel MiddleChild, only to now be plagued with shipping delays. Bikes are in transit from Taiwan, but due to the immense backlog, we are now anticipating a delivery date of February 28. While we had hoped to avoid any further delays, we have learned that these circumstances are simply beyond our control, and we thank you for your patience and understanding.
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!”
- double-butted, heat-treated 4130 Chromoly steel tubing
- 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 Cr-Mo 4130 Double 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 Aeffect 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: Shimano 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: 30.9mm Race Face Turbine / KS LEV Dropper (S & M 125mm, 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 Speedgrip
Frame Weight with Sliding Inserts and Hardware
(M): 6 Lbs 10 oz
(L): 6 Lbs 14 oz
Complete Bike Weight
(M): 30 Lbs 1 oz with Dropper and set-up Tubeless
(M): 29 Lbs 7 oz with Turbine Seat Post and set-up Tubeless
Sizes: Sm, Med, Lrg, Xlrg
Finish: Matte Black, Turquoise & Orange
Pricing: (NEW)
Complete : $2999.00 CAD / $2549.00 USD + Shipping
Complete w/Dropper : $3299.00 CAD / $2799.00 USD + Shipping
Frame Only: $804.00 CAD / $704.00 USD + Shipping
Included with the Frame Only option:
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.
29in SLX Build
- Frame: 27.5+/29 Cr-Mo 4130 Double 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 Aeffect R 50mm
- Grips: Lizard Skin Northshore
- Front Wheel: Sun Ringle Duroc 29x35mm Front 15x110mm Boost
- Rear Wheel: Sun Ringle Duroc 29x35mm 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: 30.9mm Race Face Turbine / KS LEV Dropper (S & M 125mm, L 150mm, XL 175mm) with SouthPaw Lever
- Rear Axle: SRAM 180mm Rear Maxle Ultimate 12x148mm
- Tires: MAXXIS Minion DHF 29×2.5WT 3C/Max Terra/EXO Front and Aggressor 29×2.5WT 3C/Max Terra/EXO Rear
Frame Weight with Sliding Inserts and Hardware
(M): 6 Lbs 10 oz
(L): 6 Lbs 14 oz
Complete Bike Weight
(M): 30 Lbs 1 oz with Dropper and set-up Tubeless
(M): 29 Lbs 7 oz with Turbine Seat Post and set-up Tubeless
Sizes: Sm, Med, Lrg, Xlrg
Finish: Matte Black, Turquoise & Orange
Pricing:
Complete : $2999.00 CAD / $2549.00 USD + Shipping
Complete w/Dropper : $3299.00 CAD / $2799.00 USD + Shipping
Frame Only: $804.00 CAD / $704.00 USD + Shipping
Included with the Frame Only option:
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.
27.5+ SX Build
- Frame: 27.5+/29 Cr-Mo 4130 Double Butted and Heat Treated
- Fork: Rockshox Recon RL 27.5+/29 140mm 51mm
- Headset: Cane Creek ZS-44
- Handle Bar: Race Face 35mm Chester 780mm
- Stem: Race Face 35mm Ride 50mm
- Grips: Ergon GE10 Black
- Front Wheel: Sun Ringle Duroc 27.5x40mm Front 15x110mm Boost
- Rear Wheel: Sun Ringle Duroc 27.5x40mm Rear 12x148mm Boost
- Crank: SRAM SX Eagle 175mm DM
- Chain Ring: SRAM SX 30T Ring
- BB: SRAM DUB 73mm BSA
- Chain: SRAM NX Eagle 12spd
- Cassette: SRAM SX Eagle PG-1210 10-51T 12spd
- Rear Shifter: SRAM SX Eagle Trigger 12spd
- Rear Derailleur: SRAM SX Eagle Long Cage 12spd
- Brakes: SRAM Level
- Rotors: SRAM Centerline 180mm Rounded
- Saddle: WTB Volt Comp 142mm
- Seat Post: Race Face Ride / KS LEV Dropper (S 125mm, M & L 150mm, XL 175mm) with SouthPaw Lever
- Rear Axle: SRAM 182mm Rear Maxle Ultimate 12x148mm
- Tires: Schwalbe Nobby Nic 27.5 x 2.8 Addix Evolution Speedgrip
Frame Weight with Sliding Inserts and Hardware
(M): 6 Lbs 10 oz
(L): 6 Lbs 14 oz
Complete Bike Weight
(M): 30 Lbs 1 oz with Dropper and set-up Tubeless
(M): 29 Lbs 7 oz with Turbine Seat Post and set-up Tubeless
Sizes: Sm, Med, Lrg, Xlrg
Finish: Matte Black, Turquoise & Orange
Pricing: (NEW)
Complete : $2299.00 CAD / $1949.00 USD + Shipping
Complete w/Dropper : $2599.00 CAD / $2199.00 USD + Shipping
Frame Only: $804.00 CAD / $704.00 USD + Shipping
Included with the Frame Only option:
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.
29in SX Build
- Frame: 27.5+/29 Cr-Mo 4130 Double Butted and Heat Treated
- Fork: Rockshox Recon RL 27.5+/29 140mm 51mm
- Headset: Cane Creek ZS-44
- Handle Bar: Race Face 35mm Chester 780mm
- Stem: Race Face 35mm Ride 50mm
- Grips: Ergon GE10 Black
- Front Wheel: Sun Ringle Duroc 29x35mm Front 15x110mm Boost
- Rear Wheel: Sun Ringle Duroc 29x35mm Rear 12x148mm Boost
- Crank: SRAM SX Eagle 175mm DM
- Chain Ring: SRAM SX 30T Ring
- BB: SRAM DUB 73mm BSA
- Chain: SRAM NX Eagle 12spd
- Cassette: SRAM SX Eagle PG-1210 10-51T 12spd
- Rear Shifter: SRAM SX Eagle Trigger 12spd
- Rear Derailleur: SRAM SX Eagle Long Cage 12spd
- Brakes: SRAM Level
- Rotors: SRAM Centerline 180mm Rounded
- Saddle: WTB Volt Comp 142mm
- Seat Post: Race Face Ride / KS LEV Dropper (S 125mm, M & L 150mm, XL 175mm) with SouthPaw Lever
- Rear Axle: SRAM 182mm Rear Maxle Ultimate 12x148mm
- Tires: MAXXIS Minion DHF 29×2.5WT 3C/Max Terra/EXO Front and Aggressor 29×2.5WT 3C?Max Terra/EXO Rear
Frame Weight with Sliding Inserts and Hardware
(M): 6 Lbs 10 oz
(L): 6 Lbs 14 oz
Complete Bike Weight
(M): 30 Lbs 1 oz with Dropper and set-up Tubeless
(M): 29 Lbs 7 oz with Turbine Seat Post and set-up Tubeless
Sizes: Sm, Med, Lrg, Xlrg
Finish: Matte Black, Turquoise & Orange
Pricing: (NEW)
Complete : $2299.00 CAD / $1949.00 USD + Shipping
Complete w/Dropper : $2599.00 CAD / $2199.00 USD + Shipping
Frame Only: $804.00 CAD / $704.00 USD + Shipping
Included with the Frame Only option:
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.
Frame Specs & Geometry
- Handmade Frame: 27.5+/29 Double Butted Chromoly 4130 Heat Treated
- CNC Machined Custom Yoke: Chromoly 4130
- CNC Machined Drop-Out: Chromoly 4130
- CNC Machined Head Tube: 44mm
- CNC Machined Bottom Bracket Shell: 73mm BSA
- CNC Machined Sliding Inserts: 7000 Series Aluminum – 12mm Maxle and Post Disc Mount 160mm
- Dropper Post Routing: Internal
- Hardware: Stainless Steel
- Fork Length: 551mm (140mm)
- Rear Spacing: 148mm
- Seat Post Clamp: 34.9mm
- Seat Post: 30.9mm
- Max Tire Size: 27.5×2.8in or 29×2.6in – Optimized for 2.8in tires, some 3.0 tire/rim combinations may have enough clearance. Rider discretion is advised
- Max Fork Length: 561mm Axle to Crown (150mm Travel)
- Max Dropper Post Insertion Length: Small 180mm, Medium 220mm, Large 240mm, XL 260mm
- Torques Specs for 4 Drop-Out Bolts: 17N/m to 20N/m
| 27.5+ Middlechild | STATIC | Small | Medium | Large | XL |
| HT Angle | A | 64.5° | 64.5° | 64.5° | 64.5° |
| ST Angle | B | 74° | 74° | 74° | 74° |
| Actual TT | C | 550 | 586 | 604 | 631 |
| Effective TT | D | 586 | 625 | 642 | 669 |
| Seat Tube | E | 410 | 450 | 470 | 490 |
| Chainstay | F | 415-430 | 415-430 | 415-430 | 415-430 |
| BB Height | G | 320 | 320 | 320 | 320 |
| Standover Height | H | 695 | 710 | 714 | 717 |
| BB Drop (mm) | I | -40 | -40 | -40 | -40 |
| Stack | J | 610 | 619 | 619 | 629 |
| Reach | K | 410 | 448 | 465 | 489 |
| Head Tube (mm) | L | 100 | 110 | 110 | 120 |
| Fork length (mm) | M | 551 (140 Travel) | 551 (140 Travel) | 551 (140 Travel) | 551 (140 Travel) |
| Fork Offset (mm) | N | 51 | 51 | 51 | 51 |
| Tire Size (in) | O | 2.80 | 2.80 | 2.80 | 2.80 |
| Wheelbase | 1152-1167 | 1193-1205 | 1210-1225 | 1238-1253 | |
| Rider | 155-170 | 170-178 | 178-185 | 185-195 | |
| HT Angle | A | 64.9° | |||
| Fork length (mm) | M | 541 (130 Travel) | |||
| BB Height | G | 315 | |||
| HT Angle | A | 64.1° | |||
| M | 561 (150 Travel) | ||||
| BB Height | G | 325 | |||
| Fork length (mm) | M | 551 (140 Travel) | |||
| Tire Size (in) | O | 27.5×3.00 | |||
| BB Height | G | 325 | |||
| Fork length (mm) | M | 551 (140 Travel) | |||
| Tire Size (in) | O | 27.5×2.6 | |||
| BB Height | G | 315 | |||
| Fork length (mm) | M | 551 (140 Travel) | |||
| Tire Size (in) | O | 27.5×2.4 | |||
| BB Height | G | 310 | |||
| Fork length (mm) | M | 551 (140 Travel) | |||
| Tire Size (in) | O | 26×2.8 | |||
| BB Height | G | 308 | |||
| Fork length (mm) | M | 551 (140 Travel) | |||
| Tire Size (in) | O | 29×2.4 | |||
| BB Height | G | 330 | |||
| Fork length (mm) | M | 551 (140 Travel) | |||
| Tire Size (in) | O | 29×2.6 | |||
| BB Height | G | 335 |
| 27.5+ Middlechild | STATIC | Small | Medium | Large | XL |
| HT Angle | A | 64.5° | 64.5° | 64.5° | 64.5° |
| ST Angle | B | 74° | 74° | 74° | 74° |
| Actual TT | C | 21.65 | 23.07 | 23.78 | 24.84 |
| Effective TT | D | 23.07 | 24.61 | 25.28 | 26.34 |
| Seat Tube | E | 16.14 | 17.71 | 18.50 | 19.29 |
| Chainstay | F | 16.30-16.90 | 16.30-16.90 | 16.30-16.90 | 16.30-16.90 |
| BB Height | G | 12.60 | 12.60 | 12.60 | 12.60 |
| Standover Height | H | 27.36 | 27.95 | 28.11 | 28.23 |
| BB Drop (mm) | I | -40 | -40 | -40 | -40 |
| Stack | J | 24.02 | 24.37 | 24.37 | 24.76 |
| Reach | K | 16.18 | 17.64 | 18.31 | 19.25 |
| Head Tube (mm) | L | 100 | 110 | 110 | 120 |
| Fork length (mm) | M | 551 (140 Travel) | 551 (140 Travel) | 551 (140 Travel) | 551 (140 Travel) |
| Fork Offset (mm) | N | 51 | 51 | 51 | 51 |
| Tire Size (in) | O | 2.80 | 2.80 | 2.80 | 2.80 |
| Wheelbase | 45.35-45.94 | 46.97-47.44 | 47.64-48.23 | 48.74-49.33 | |
| Rider | 5’2-5’7 | 5’7-5’10 | 5’10-6’1 | 6’1-6’5 | |
| HT Angle | A | 64.9° | |||
| Fork length (mm) | M | 541 (130 Travel) | |||
| BB Height | G | 12.40 | |||
| HT Angle | A | 64.1° | |||
| Fork length (mm) | M | 561 (150 Travel) | |||
| BB Height | G | 12.80 | |||
| Fork length (mm) | M | 551 (140 Travel) | |||
| Tire Size (in) | O | 27.5×3.00 | |||
| BB Height | G | 12.80 | |||
| Fork length (mm) | M | 551 (140 Travel) | |||
| Tire Size (in) | O | 27.5×2.6 | |||
| BB Height | G | 12.40 | |||
| Fork length (mm) | M | 551 (140 Travel) | |||
| Tire Size (in) | O | 27.5×2.4 | |||
| BB Height | G | 12.20 | |||
| Fork length (mm) | M | 551 (140 Travel) | |||
| Tire Size (in) | O | 26×2.8 | |||
| BB Height | G | 12.13 | |||
| Fork length (mm) | M | 551 (140 Travel) | |||
| Tire Size (in) | O | 29×2.4 | |||
| BB Height | G | 12.99 | |||
| Fork length (mm) | M | 551 (140 Travel) | |||
| Tire Size (in) | O | 29×2.6 | |||
| BB Height | G | 13.19 |
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