Boasting bottomless-feeling rear suspension, deft handling and a light, stiff carbon frame, the Diamondback Release 4C slices through technical terrain and makes short work of climbs.
- Monocoque carbon front and rear triangle offer stiff and efficient ride characteristics; 148 x12 mm Maxle rear dropouts increase stiffness where it counts
- 130 mm Level Link rear travel with Fox Float DPS EVOL LV shock and 150 mm front travel with Fox 36 Performance Float fork combine for smooth, bump-eating performance
- Level Link suspension system isolates chain forces from trail inputs for suspension that doesn't bob when you stomp on the pedals, yet remains plush on technical descents
- SRAM NX Eagle 12-speed single-ring drivetrain provides consistent shifting and, thanks to its 50-tooth granny gear, makes short work of pesky climbs
- SRAM G2 R brakes let you slice through the most technical lines with confidence
- KS Rage-I dropper post with Westy left-hand remote lever adds maneuverability on descents
- Diamondback Blanchard 28R wheels make it easy to go tubeless
- Includes DB aluminum platform pedals with replaceable pins
- NOTE: Specs and images are subject to change based on component availability
Imported.
- 1 year of free adjustments (see more below)
- In-store bike assembly
- Pickup in store or curbside
- Bike experts available at 170+ bike shops
- 20% off shop services
- Free tubes with purchase of flat tire repair (Co-op Cycles brand tubes only; tube must be installed at time of purchase)
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
| Best Use | Mountain Biking |
|---|---|
| Frame | Monocoque carbon front and rear triangle |
| Mountain Bike Style | All-mountain |
| Bike Suspension | Full Suspension |
| Fork | Fox 36 performance float, 27.5 in., 150 mm travel, grip 3-position dampener, rebound adjust, 1.5 in. tapered steerer, 110 x 15 mm thru axle, 44 mm offset |
| Fork Travel | 150 millimeters |
| Rear Shock | Fox Float DPS EVOL LV, Performance, 3-Position Lever, 200 x 57 mm, 22.2 mm Eyelet Width |
| Crankset | SRAM Descendant 6K Eagle with 32T Direct Mount |
| Bottom Bracket | SRAM DUB Outboard Bearing |
| Shifters | SRAM NX Eagle 12 Speed |
| Rear Derailleur | SRAM NX Eagle 12 Speed |
| Rear Cogs | SRAM PG-1230 Eagle, 12 Speed, 11-50T |
| Number of Gears | 12 gear(s) |
| Brake Type | Hydraulic Disc Brake |
| Brakes | SRAM G2 R, 4 Piston with 180 mm Front and Rear Centerline Rotors |
| Brake Levers | SRAM G2 R |
| Rims | Diamondback Blanchard 28R, Tubeless ready, 32-hole |
| Front Hub | 32h Aluminum Boost 110 x 15 mm thru axle, Sealed Cartridge Bearing |
| Rear Hub | 32h Aluminum Boost 148 x 12 mm thru axle, 5 Sealed Cartridge Bearing, Cassette |
| Wheel Size | 27.5 inches |
| Tires | Maxxis Minion DHF 27.5 x 2.3 in. EXO, TLR, Folding / Maxxis Minion DHR 27.5 x 2.3 in. EXO, TLR, Folding |
| Tire Width | 2.3 inches |
| Handlebar Shape | Riser Bar |
| Handlebar | DB35 Aluminum 780 mm Wide, 15 mm Rise, 35 mm Bar Bore |
| Stem | Factor Components F355, 35 mm Reach, 35 mm Bar Bore |
| Seat Post | KS Rage-I, Internal Dropper, 31.6 mm, Westy 1x Remote; XS = 75 mm, S = 100 mm, M = 150 mm, L/XL = 175 mm |
| Dropper Post | Yes |
| Saddle | WTB Volt Chromoly |
| Pedals | DB CNC Platform, Sealed Cartidge Bearing with Replaceable Pins |
| Headset | FSA No. 57 Sealed Cartridge |
| Chain | SRAM NX Eagle 12-speed |
| Weight | Unavailable |
| Gender | Unisex |
| XS | S | M | L | XL | |
|---|---|---|---|---|---|
| Height Range | 5'1"-5'4" | 5'4"-5'7" | 5'7"-5'10" | 5'10"-6'2" | 6'2"-6'6" |
| Reach | 380.0 | 406.0 | 429.0 | 451.0 | 473.0 |
| Stack | 584.0 | 584.0 | 597.0 | 603.0 | 612.0 |
| Effective Top Tube | 557.0 | 585.0 | 610.0 | 635.0 | 660.0 |
| Seat Tube Center-Top | 388.0 | 394.0 | 432.0 | 483.0 | 533.0 |
| Standover Height | 739.0 | 739.0 | 740.0 | 743.0 | 749.0 |
| Head Tube Length | 100.0 | 100.0 | 110.0 | 120.0 | 130.0 |
| Head Tube Angle (degrees) | 66.0 | 66.0 | 66.0 | 66.0 | 66.0 |
| Seat Tube Angle (degrees) | 73.0 | 73.0 | 73.0 | 73.0 | 73.0 |
| Bottom Bracket Height | 341.0 | 341.0 | 341.0 | 341.0 | 341.0 |
| Wheelbase | 1107.0 | 1133.0 | 1160.0 | 1186.0 | 1213.0 |
| Chainstay | 425.0 | 425.0 | 425.0 | 425.0 | 425.0 |
| Fork Offset | 44.0 | 44.0 | 44.0 | 44.0 | 44.0 |
Sizing Notes
Measurements are stated in millimeters unless otherwise indicated.
How we measure bikes
- Standover Height Standover Height is a measurement from the ground to the top of the top tube, measured at the midpoint of the top tube.
- Reach Reach is the horizontal distance from the center of the cranks to the center of the head tube, measured at head tube level.
- Stack Stack is the vertical distance from the center of the cranks to the center of the head tube, measured to the top of the head tube.
- Effective Top Tube Effective top tube is the distance from the center of the head tube to the center of the seat tube/seat post, measured parallel to the ground.
- Seat Tube Center to Top Seat Tube length is the measurement of the seat tube, from the center of the cranks to the top of the seat tube.
- Head Tube Length Head Tube Length is measured from the bottom to the top of the head tube.
- Head Tube Angle Head Tube Angle is the acute angle between the head tube and the ground (measured towards the rear of the bike)
- Seat Tube Angle Seat Tube Angle is the acute angle between the seat tube and the ground (measured towards the rear of the bike).
- Bottom Bracket Height Bottom Bracket Height is a measurement taken vertically from the ground up to the center of the cranks.
- Wheelbase Wheelbase is the measurement from the center of the front axle to the center of the rear axle.
- Chainstay Length Chainstay Length is the measurement from the center of the cranks to the center of the rear axle.
- Fork Offset Fork Offset, or rake, is the distance from the front axle to a line drawn parallel to the center of the head tube or steering axis.