Diamondback Release 4C 27.5 Trail Bike
The Release 4C offers the same unparalleled rear suspension and agile handling found in our aluminum Release models, but takes it up a notch with a lighter, stiffer carbon fiber frame. At its core is our Level Link suspension system, meticulously designed to separate chain forces from trail impacts. This means your suspension remains firm when you power through pedal strokes, yet transforms into a plush cushion on challenging descents.
To deliver a smooth, bump-absorbing ride, the Release 4C boasts a Fox Float DPS EVOL LV rear shock and a 150mm travel Fox 36 Performance Float fork. SRAM's NX Eagle 12-speed single-ring drivetrain ensures consistent and precise shifting, while its 50-tooth granny gear effortlessly conquers steep climbs. SRAM G2 R brakes provide reliable control on the most technical routes, and tubeless-ready Maxxis Minion tires guarantee confident traction throughout your ride.
Components and Specifications:
| COMPONENT | SPECIFICATION |
|---|---|
| FRAME |
Carbon Release 27.5, Monocoque Carbon Front and Rear Triangle 130mm Travel, Level Link Suspension Platform, Euro Standard Threaded BB, ISCG-05 Tabs, Boost 148x12mm Maxle Dropout, 1.5" Tapered Headtube, Post Mount Disc Tabs |
| REAR SHOCK |
Fox Float DPS EVOL LV, Performance, 3 Position Lever, 200x57mm, 22.2mm Eyelet Width |
| FORK |
Fox 36 Performance Float, 27.5", 150mm Travel, Grip 3 Position Damper, Rebound Adjust, 1.5" Tapered Steerer, 110x15mm Thru-axle, 44mm Offset |
| HEADSET | FSA No. 57 Sealed Cartridge |
| CRANKS | SRAM Descendant 6K Eagle w/32T Direct Mount |
| BOTTOM BRACKET | SRAM DUB Outboard Bearing |
| FRONT DERAILLEUR | N/A |
| REAR DERAILLEUR | SRAM NX Eagle, 12 Speed |
| SHIFTER | SRAM NX Eagle, 12 Speed |
| COGSET | SRAM PG-1230 Eagle, 12 Speed, 11-50T |
| CHAIN | SRAM NX Eagle, 12 Speed |
| FRONT HUB |
Novatec SL-Team, 32h Aluminum Boost 110x15mm Thru-axle, Sealed Cartridge Bearing |
| REAR HUB |
Novatec SL-Team, 32h Aluminum, 148x12mm Thru-axle, Sealed Cartridge Bearing |
| SPOKES | 14g Stainless Steel |
| RIMS | Diamondback Blanchard 28R, Taped for Tubeless, 32h |
| TIRES |
Maxxis Minion DHF 27.5x2.3" EXO, TR (Tubeless Ready), Folding / Maxxis Minion DHR 27.5x2.3" EXO, TR (Tubeless Ready), Folding |
| BRAKE LEVERS | SRAM G2 R |
| PEDALS |
DB CNC Platform, Sealed Cartridge Bearing w/Replaceable Pins |
| HANDLEBAR |
DB35 Aluminum 780mm Wide, 15mm Rise, 35mm Bar Bore |
| GRIPS | Ergon GE10 Evo Lock-On |
| STEM | Factor Components F355, 35mm Reach, 35mm Bar Bore |
| SEAT | WTB Volt Chromoly |
| SEATPOST | KS Rage-I, Internal Dropper, 31.6 w/Westy 1x Remote |
| EXTRAS |
Tool Kit, DB Shock Pump, Tubeless Valves, DB Mud Guard, Chainstay Protector, Carbon Paste |
| BRAKES |
SRAM G2 R, 4 Piston w/180mm Front / 180mm Rear Centerline Rotors |
Geometry:
| FRAME SIZE | SM/15.5 5'4" - 5'7" | MD/17 5'7" - 5'10" | LG/19 5'10" - 6'2" | XL/21 6'2" - 6'6" |
|---|---|---|---|---|
| Rider Height | - | - | - | - |
| Bike Stand Over Height | 739.0 mm | 740.0 mm | 743.0 mm | 749.0 mm |
| Bike Seat Tube Length | 394.0 mm | 432.0 mm | 483.0 mm | 533.0 mm |
| Bike Top Tube Length | 585.0 mm | 610.0 mm | 635.0 mm | 660.0 mm |
| Bike Head Tube Length | 100.0 mm | 110.0 mm | 120.0 mm | 130.0 mm |
| Bike Head Angle | 66.0 ° | 66.0 ° | 66.0 ° | 66.0 ° |
| Bike Seat Angle | 73.0 ° | 73.0 ° | 73.0 ° | 73.0 ° |
| Bike Wheel Base | 1133.0 mm | 1160.0 mm | 1186.0 mm | 1213.0 mm |
| Bike Chain Stay Length | 425.0 mm | 425.0 mm | 425.0 mm | 425.0 mm |
| Bike Fork Offset | 44.0 mm | 44.0 mm | 44.0 mm | 44.0 mm |
| Bike Bb Height | 341.0 mm | 341.0 mm | 341.0 mm | 341.0 mm |
| Bike Bb Drop | 14.0 mm | 14.0 mm | 14.0 mm | 14.0 mm |
| Bike Stem Length | 40.0 mm | 40.0 mm | 40.0 mm | 40.0 mm |
| Bike Handlebar Width | 780.0 mm | 780.0 mm | 780.0 mm | 780.0 mm |
| Bike Crank Length | 170.0 mm | 175.0 mm | 175.0 mm | 175.0 mm |
| Bike Seat Post Length | 435.0 mm | 485.0 mm | 485.0 mm | 350.0 mm |
| Bike Stack | 584.0 mm | 597.0 mm | 603.0 mm | 612.0 mm |
| Bike Reach | 406.0 mm | 429.0 mm | 451.0 mm | 473.0 mm |
| Bike Fork Travel | 150.0 mm | 150.0 mm | 150.0 mm | 150.0 mm |