2025 Forbidden Dreadnought 3 Bike
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Key Features
- Trifecta V2 High Pivot Suspension: 160mm of rear travel via an inverted four-bar linkage, optimized for stability and rough terrain control.
- SRAM Eagle 90 Transmission: Reliable and robust mechanical T-Type drivetrain (SRAM's highest-tier mechanical group) with a wide 10-52 tooth range.
- RockShox Select+ Suspension: Features a robust 170mm **ZEB Select+** fork and a **Vivid Select+** rear shock with a Touchdown damper and hydraulic bottom out.
- SRAM Maven Bronze Brakes: Powerful 4-piston Maven Bronze brakes with large 200mm CenterLine 2.0 rotors for excellent stopping power.
- Proportional Geometry: Features true size-specific chainstay lengths (431mm to 475mm) for balanced handling across all S1-S4 sizes.
- Wheel Versatility: Converts between full 29" and Mixed Wheel (MX) configurations with included modular dropouts.
- Crankbrothers Synthesis Enduro Alloy Wheels: Durable alloy wheelset (31.5mm F / 29.5mm R) for optimal performance.
- Integrated Chainguide: Forbidden Race upper idler guide and MRP MXg lower guide with bashguard for high-pivot chain security.
Full Specifications
| Product | Forbidden Dreadnought 3 Bike |
|---|---|
| Model Year | 2025 |
| Intended Use | Enduro / All-Mountain / Freeride / Bike Park |
| Rider | Unisex |
| Sizes and Geometry | S1, S2, S3, S4 (29" and MX) |
| Wheel Size | 29" or Mixed (29" Front / 27.5" Rear) |
| Frame Material | Carbon Fiber |
| Frame Material Details | High-modulus carbon fiber front and rear triangles, forged V2 Rate Control Linkage, molded protection, integrated rear fender |
| Rear Travel | 160mm |
| Rear Shock | RockShox Vivid Select+, Touchdown RT damper, 205mm x 60mm |
| Fork | RockShox ZEB Select+, Charger 3.1 RC2 damper, 44mm offset, 38mm stanchions |
| Fork Travel | 170mm |
| Head Tube Diameter | Tapered, 1.125" top, 1.5" bottom |
| Headset | Cane Creek 40, ZS44/28.6 upper, ZS56/40 lower |
| Handlebar | Forbidden, 800mm width, 35mm clamp Rise: 22.5mm (S1/S2), 30mm (S3/S4) |
| Stem | Forbidden, 40mm length, 35mm bar clamp |
| Grips | Forbidden, single clamp lock-on, 128mm length |
| Brakes | SRAM Maven Bronze, 4-piston, organic pads Rotors: SRAM CenterLine 2.0, 6-bolt, 200mm |
| Brake Levers | SRAM Maven Bronze Stealth, tool-free reach adjust |
| Drivetrain | 1x |
| Shifters | SRAM Eagle 90 Transmission, 12-speed |
| Front Derailleur | None |
| Rear Derailleur | SRAM Eagle 90 Transmission, 12-speed |
| ISCG Tabs | ISCG05, lower two bolts only |
| Chainguide | Forbidden Race upper idler pulley guide, MRP MXg lower pulley with bashguard |
| Cranks | SRAM Eagle 90 Transmission Alloy DUB, 165mm length |
| Chainrings | SRAM Eagle 90 Transmission, 32 tooth |
| Bottom Bracket | SRAM DUB Wide, 73mm English/BSA threaded |
| Pedals | None |
| Chain | SRAM Eagle 70 Transmission Flattop, 12-speed |
| Cassette | SRAM GX Eagle Transmission XS-1275, 12-speed, 10-52 tooth |
| Rims | Crankbrothers Synthesis Enduro Alloy, tubeless ready Front: 31.5mm inner; Rear: 29.5mm inner |
| Hubs | Crankbrothers Synthesis, 15x110mm Boost front, 12x148mm Boost rear with XD driver |
| Spokes | Sapim Race, stainless steel, 2.0/1.8/2.0mm double-butted |
| Tires | Front: Maxxis Assegai, 3C MaxxTerra, EXO, TR, 29" x 2.5" Rear: Maxxis Forekaster, 3C MaxxTerra, EXO+, TR, 2.4" |
| Saddle | fi'zi:k Terra Alpaca X5, S-Alloy rails, 145mm width |
| Seatpost | OneUp dropper Drop: 120mm (S1), 150mm (S2), 180mm (S3), 210mm (S4) |
| Seatpost Diameter | 31.6mm |
| Seatpost Clamp | Forbidden, 7075 CNC anodized aluminum, 34.9mm |
| Rear Dropout / Hub Dimensions | 12mm x 148mm (Boost) |
| Max. Tire Size | 2.5" |
| Bottle Cage Mounts | One inside front triangle, plus accessory mounts under top tube |
| Colors | KX500, Arrakis |
| Warranty | Lifetime frame |
| Weight | |
| Miscellaneous |
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Geometry
Figures are based on stock **0mm offset** dropouts and a 170mm fork (586mm A-C, 44mm offset). Values are listed as: **29" Geometry** / **Mixed (MX) Geometry**. All measurements are in millimeters (mm) unless otherwise noted.
| Size | S1 | S2 | S3 | S4 |
|---|---|---|---|---|
| Reach | 435 / 430 | 455 / 450 | 475 / 471 | 495 / 491 |
| Stack | 615 / 618 | 628 / 632 | 642 / 645 | 655 / 659 |
| Top Tube Length (Effective) | 571 / 572 | 594 / 595 | 617 / 618 | 640 / 641 |
| Head Tube Angle | 63.5° / 63.1° | 63.5° / 63.1° | 63.5° / 63.1° | 63.5° / 63.1° |
| Seat Tube Angle (Effective) | 77.5° / 77.1° | 77.5° / 77.1° | 77.5° / 77.1° | 77.5° / 77.1° |
| Chainstay Length (Rear Center) | 431 | 446 | 460 | 475 |
| Wheelbase | 1206.5 / 1206.5 | 1247.7 / 1247.6 | 1288.9 / 1288.8 | 1330.1 / 1330.0 |
| Standover | 771 | 775 | 777 | 780 |
| Bottom Bracket Height | 347 / 341 | 347 / 341 | 347 / 341 | 347 / 341 |
| Head Tube Length | 90 | 105 | 120 | 135 |
| Recommended Fork Offset | 44mm | 44mm | 44mm | 44mm |
| Additional Info |
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Shipping Policy
Components:
All component items (wheels, drivetrains, suspension, brakes, etc.) ship within 1–4 business days of purchase.
Bicycles:
Complete bikes typically ship within 2–3 weeks due to build, tuning, and inspection times. You will receive tracking information as soon as your order is ready to ship.
Riding Gear & Apparel:
Riding gear and apparel orders (helmets, jerseys, gloves, etc.) ship within 1–3 business days.
Returns & Exchanges:
If you received the wrong size or wish to exchange an item, it must be returned in original condition—unused, uninstalled, and with all packaging intact.
For full details, please see our Refund Policy before initiating a return.
