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2025 Forbidden Dreadnought 1 Bike KX500

$9,299.00 $147.00

Key FeaturesTrifecta V2 High Pivot Suspension: 160mm of rear travel via an inverted four-bar linkage, delivering exceptional stability and big-hit performance for Enduro/Bike Park use.SRAM X0 Eagle Transmission (T-Type): Top-tier electronic wireless shifti

Color:
Size:

SKU: DDV9029098304 Category:

Key Features

  • Trifecta V2 High Pivot Suspension: 160mm of rear travel via an inverted four-bar linkage, delivering exceptional stability and big-hit performance for Enduro/Bike Park use.
  • SRAM X0 Eagle Transmission (T-Type): Top-tier electronic wireless shifting with the durable X0 T-Type crankset and cassette.
  • RockShox Ultimate Suspension: Features a robust 170mm **ZEB Ultimate** fork with Charger 3.1 RC2 damper/ButterCups and a **Vivid Ultimate** rear shock.
  • SRAM Maven Ultimate Brakes: Most powerful 4-piston Maven Ultimate brakes with 200mm HS2 rotors for absolute control and heat management.
  • Proportional Geometry: Features true size-specific chainstay lengths (431mm to 475mm) for balanced handling across all S1-S4 sizes.
  • Crankbrothers Synthesis 11 Carbon Wheels: High-performance carbon wheelset (31.5mm F / 29.5mm R) for optimal tire profile and minimal weight.
  • Modular Dropout System: Easily converts between full 29″ and Mixed Wheel (MX) configurations with included modular dropouts.
  • Integrated Chainguide: Forbidden Race upper idler guide and MRP MXg lower guide with bashguard.

Full Specifications

Product Forbidden Dreadnought 1 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 Ultimate, Touchdown RC2T damper, 205mm x 60mm
Fork RockShox ZEB Ultimate, 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 Hellbender 70, ZS44/28.6 upper, ZS56/40 lower
Handlebar Burgtec Ride Wide Enduro Carbon, 800mm width, 35mm clamp
Rise: 22.5mm (S1/S2), 30mm (S3/S4)
Stem Burgtec MK3 Enduro, 42.5mm length, 35mm bar clamp
Grips Forbidden, single clamp lock-on, 128mm length
Brakes SRAM Maven Ultimate, 4-piston, organic pads
Rotors: SRAM HS2, 6-bolt, 200mm
Brake Levers SRAM Maven Ultimate Stealth, tool-free reach and contact point adjust
Drivetrain 1x
Shifters SRAM Eagle Pod Rocker Controller, 12-speed, AXS electronic wireless
Front Derailleur None
Rear Derailleur SRAM X0 Eagle Transmission, 12-speed, AXS electronic wireless
ISCG Tabs ISCG05, lower two bolts only
Chainguide Forbidden Race upper idler pulley guide, MRP MXg lower pulley with bashguard
Cranks SRAM X0 Eagle Transmission Alloy DUB, 165mm length
Chainrings SRAM X0 Eagle Transmission, 32 tooth
Bottom Bracket SRAM DUB Wide, 73mm English/BSA threaded
Pedals None
Chain SRAM X0 Eagle Transmission Flattop, 12-speed
Cassette SRAM X0 Eagle Transmission XS-1295, 12-speed, 10-52 tooth
Rims Crankbrothers Synthesis 11 Carbon, tubeless ready
Front: 31.5mm inner; Rear: 29.5mm inner
Hubs Crankbrothers, 15x110mm Boost front, 12x148mm Boost rear with Ratchet freehub and XD driver
Spokes Sapim CX Ray (F) / Sapim CX Sprint (R), stainless steel, bladed
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
  • Trifecta V2 high pivot inverted four-bar rear suspension design with V2 Rate Control Linkage
  • Internal cable routing
  • SRAM UDH (Universal Derailleur Hanger)
  • Includes RockShox mudguard/fender and SRAM AXS Powerpack battery charger
  • Modular dropouts (0mm offset) included for 29″ and MX setup; +/-10mm aftermarket options available.

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
  • BB Drop: -26mm (29″ setup) / -19.6mm (MX setup).
  • Chainstay length is size-specific (Proportional Sizing).
  • Geometry is adjusted by the modular dropouts: MX setting is 0.4 slacker and 6mm lower than 29″ setting.

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