Sortie 2

The Diamondback Sortie series is the quintessential trail bike. Responsive enough for challenging epic trail rides or those all day XC grinders, the Sortie craves and owns the singletrack domain. The Sortie Two is designed to strike a balance of agility and stability. It rides well at all speeds is as nimble climbing up the mountain as it is stable descending.

Years of product testing and refinement have gone into the Sortie’s platform. For 2012 we’ve revamped the rear triangle effectively making it stronger and stiffer without any weight gain. Put simply, the Sortie Two is a bike that’ll make you feel like you are cheating.

Diamondback’s Design Philosophy is a no-nonsense approach to building quality bicycles. We want our bike designs to be straightforward: their hardware accessible and their suspension simple.

2012 Sortie Two frames are created from 6061-T6 Weapons Grade Aluminum and features a hydroformed top tube, a butted and formed downtube and seatstays, an under arch seatstay bridge, a tapered headtube, a standard 9×135mm vertical drop out and Diamondbacks legendary Knuckle Box Suspension technology.

The Knuckle Box, or bell crank, is the core of our single-pivot four-bar suspension platform. Optimally placed pivots equate to a low leverage ratio, and ultimately to superior pedaling efficiency and small-bump compliance. This also allows the shock to work more efficiently and reduces pedal induced motion. It also reduces overall load on the system which will lead to improved shock and bearing life.

Placing the Knuckle Box low within the frame, situates the greatest weight of the bike closer to the bottom bracket, which lowers the bike’s center of gravity and allows it to better track and corner.

Wheel-rate is also one of the most significant aspects of a suspension system. Wheel-rate is the effective spring-rate when measured at the wheel. A benefit of our four-bar linkage is increased control over the wheel-rate. Obtaining the spring-rate curves in shocks from Fox is necessary to allowing us to determine the wheel-rate. Working closely with Fox, we’re able to optimize the wheel-rate to be linear-to-slightly progressive. This results in superb small-bump compliance, more perceived travel and excellent bottom-out protection. For this application we’ve chosen to run a 130mm Fox
Float RP23 Air Shock with 3 position Adaptive Logic Pro Pedal and Boost Valve Technologies. The extra volume “XV” 200×57mm air shock with rebound adjust and all new 3 position “adaptive logic” Propedal Platform keeps the rear riding plush without too much sacrifice on the pedal uphill. The RP23’s patented Boost Valve technology provides a feeling of endless travel and plushness like that of a downhill rig, but with XC pedaling efficiency.

Component wise, the Sortie Two continues to be a high performance machine, weaving in a more cost effective component package. Starting with the Fox 32 Float RL 140mm travel air fork, this fork comes with an open bath system with external rebound, 32mm Easton aluminum stanchions, magnesium lowers, and a standard 9mm quick release axle.

Complementing the Fox suspension package on the Sortie Two, is practical and cost-effective component package starting with a Shimano drivetrain. This SLX/Deore mix includes an FCM552 Dyna-Sys 10spd Crankset with external BB (24/32/42t), Deore Deore M505 hydraulic disc brakes, Deore shifters, Deore front and SLX rear derailleurs, an HG62 Deore 10spd cassette, and HG54 chain. EA30 post and stem come courtesy of Easton while the bars, a set of DB Lazer Series 31.8mm low rise, come courtesy of Diamondback. A WTB Vigo seat provides a style and comfort for those all day spins.

Last but not least we’ve finished off the Sortie Two with a set of 32h SL-6 Doublewall Disc rims laced to alloy disc hubs and mounted with Kenda Slant 6 tires.

Knuckle Box Frame Characteristics:

Single-Sided Hardware – Single-sided oversized heat treated hardware is used for the three main pivot points allows for easy access to your 14 high-quality Enduro Max bearings simply with standard tools. No more removing the crankset to tighten or service your pivots.

Partnership w/ Fox – By providing suspension kinematics early in our design process, Fox is able to custom tune their shock to work precisely with our frames, improving performance.

Knucklebox Technology
LOW AND TIGHT – The Knuckle Box platform was designed specifically to be low and tight:

  • Low center of gravity: All suspension parts are positioned farther down on the frame for a stable and balanced ride.
  • Low leverage suspension design: Lower air pressure results in longer shock life, less frame loading and better pedaling.
  • Tight, compact linkage system of the Knuckle Box bell crank isolates and cradles the rear shock.
  • Tight and large anodized aluminum hardware, matched with Force-Rated Enduro Max Bearings: Withstands higher loads and better handles oscillating motion.

The 2012 Sortie series comes in SM (15.5"), MD (17"), LG (19"), XL (21") sizes and the Two is blue with white accents in color.

If you are on the hunt for the most nimble and aggressive Trail/XC bike on the market… look no further. The Sortie Two is the perfect full suspension trail machine for the rider serious about the ride and the value.


  • Weapons Grade Aluminum Sortie 5” Trail Frame w/ Knuckle Box Suspension Platform
  • Fox 32 Float RL 140mm Fork / Fox Float RP23 XV Rear Shock
  • Shimano FCM-552 2pc Crankset, Deore frt and SLX rear Derailleur’s 10Spd
  • SL-6 Double Wall Rims w/ Eyelets
  • Shimano Deore Hydraulic Disc Brakes

Bike Specs

Sizes 15.5" Small  17" Medium  19" Large  21" XLarge 
Frame Sortie Trail 5" 6061-T6 Weapons Grade Aluminum w/ Hydroformed Top Tube, Butted / Formed Down Tube / Seatstays, Under Arch Seatstay bridge, Knuckle Box Technology, 9mmx135mm Verticle Drop out
Fork Fox 32 FLoat RL Air, 140mm travel, open bath, with ext. rebound knob, 32mm Easton aluminum stanchions, magnesium lowers
Rear Shock Fox Float Adaptive Logic, RP23 "XV" extra volume 200x57mm Air w/ rebound adj, w/NEW 3 position "adaptive logic" Propedal Platform, with On/Off lever
Cranks Shimano FCM552 Dyna-Sys 10spd Crankset w/Shimano outboard bearing BB w/ replacable rings 24/32/42t
Bottom Bracket Shimano outboard bearing BB
F. Derailleur Shimano Deore dual pull, down swing, 34.9
R. Derailleur Shimano SLX SGS 10spd
Shifter Shimano Deore 10spd Rapidfire
Brake Levers Shimano Deore M505 radial w/ hinge clamp, reach adj.
Brakes Shimano M445 Hydraulic Disc w/ 6-bolt, 180mm frt / 160mm rear Rotors
Cassette Shimano HG62 Deore 10spd Cassette (11-36t)
Rims 32h SL-6 Doublewall Disc
Tires KENDA Slant 6 26x2.1
Pedals DB Toe Clip Compatible alloy
Handlebar DB Lazer Series 31.8mm low rise
Stem Easton EA30 31.8mm
Seatpost Easton EA30 Double bolt clamp 31.6mm
Seat WTB VIGO comp
Headset Zerostack, shallow steel cups, Loose ball bearing 1 1/8"
Colors Blue
Chain Shimano HG54 10spd
Hubset (F) 32h SL-6 Alloy w/ CNC Disc Mount (R) 32h SL-6 Alloy Cassette w/ CNC Disc mount
Spokes Black 14g Stainless Steel
Grips DB4L 135mm Kraton
Extras Knuckle Box Shock Pump, Sag Gauge, DB Key Chain, Owner’s manual / Sortie owner's manual cover, Chainstay Protector, Clear Coat, H20 bottle mounts
Note Specifications Subject to Change


Size 15.5" Small 17" Medium 19" Large 21" XLarge
Seat Tube Length ** 15.5mm 17.0mm 19.0mm 21.0mm
Standover Height 28.0mm 28.5mm 28.5mm 29.5mm
Top Tube Length * 22.5mm 23.5mm 24.0mm 25.0mm
Head Tube Length 120.0mm 130.0mm 130.0mm 140.0mm
Head Angle 70.0° 70.0° 70.0° 70.0°
Seat Angle 73.0° 73.0° 73.0° 73.0°
Wheel Base 1076.0mm 1106.0mm 1115.0mm 1134.0mm
Chain Stay Length 435.0mm 435.0mm 435.0mm 435.0mm
Fork Offset 35.0mm 35.0mm 35.0mm 35.0mm
BB Height 336.0mm 336.0mm 336.0mm 336.0mm
Stem Length 60.0mm 75.0mm 90.0mm 100.0mm
Handlebar Width 670.0mm 670.0mm 670.0mm 670.0mm
Crank Length 170.0mm 175.0mm 175.0mm 175.0mm
Seat Post Length 300.0mm 300.0mm 300.0mm 300.0mm
* Measured Horizontally ** Measured from Center

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