Transition TR450

210mm (8.25") Rear Wheel Travel Fox DHX RC4 Coil 9.5" x 3" stroke 6000 Series Heat Treated Aluminum Sizes: Small, Medium, Large Current Production Run Colors: TBD Decals: TBD Frame Weight: 9.5 lbs (without rear shock) Complete Bike Weight Range: 38-40 lbs (Depending on Rear Shock and Fork current test prototype bike is 39 lbs.) Tapered headtube 1 1/8" to 1.5" Compatible with up to 8" dual crown forks 12 x 150mm thru axle Dropouts Standard 83mm bottom bracket spacing Accepts up to 8" Rear Disc Brake Rotors Easily fits up to 2.8" rear tire 1 year defect warranty, Lifetime crash replacement BUILD SPECS: Shock Specs: 9.5" eye-to-eye x 3" stroke, Rear Pin 22.2mm x 8mm, Forward Pin 22.2mm x 8mm Bottom Bracket: Euro 83mm shell Headset: 1.5" Lower (deep cup compatible) / 1-1/8" Cane Creek Integrated Compatible (drop in bearing) Seatpost: 31.6mm Seat Clamp: 34.9mm Rear Dropout Spacing: 150mm x 12mm Disc Brake Mount: International Standard ISCG 05 Mounting Tabs       SIZING This is some general information as to what we typically recommend for finding the right size frame given your height.   Small Medium Large 5'2" - 5'7" X     5'7" - 6'0"   X   6'0" - 6'6"     X GEOMETRY (573m axle-crown)   Small Medium Large Reach (middle Geo setting) 366.22mm 391.62mm 417.02mm Stack (middle Geo setting) 580.74mm Top Tube (Effective) 22.4"/568.96mm 23.4"/594.36mm 24.4"/619.76mm Seat Tube (center to top) 16.5"/420mm Head Tube Angle 63°, 63.5°, 64° Adjustable ChainStay Length 17.5"/444.5mm Bottom Bracket Height 13.75", 14", 14.25" / 349.25mm, 355.6mm, 361.95mm Adjustable Wheelbase (middle Geo setting) 45.5"/1155.7mm 46.5"/1181.1mm 47.5"/1206.5mm Head Tube Length 4.33"/110mm Max Rear Tire Clearance 26" x 3.0" Rear Hub Spacing 150mm Rear Dropout Axle Size 12mm Head Tube Tapered 1.5" Lower / Cane Creek Integrated Top BB Shell Width 83mm

The TR450 is our dedicated downhill racing machine. Heavily researched and selected with direct input from pro rider Lars Sternberg, this is an aggressive geo built for speed and stability. With a careful ratio between chainstay length and head angle, the frame has a neutral feel in corners with good rider weight balance between the front and rear wheels. The TR450 gets 8.25” of travel from a 9.5” x 3” shock placed low in the front triangle. The linkage was tuned to provide a gradual change from beginning to ending leverage rate. The suspension ramps up very evenly through the travel to give the bike a supple top stroke and good bottom out control without excessive sag or mid stroke wallow. This result is a consistent progressive suspension feel that is predictable and yields a high amount of tunability.

There are large cartridge bearings at all pivot locations, with an absolute monster of a bearing used at the main pivot for durability and frame stiffness. All bearings are pressed directly against post welding machined bearing seats inside the linkages, eliminating misalignment that can occur when bearings placed at outer edges are “pinched” together. The overall suspension design was selected to keep the shock low in the frame, while still protecting the rear shock from tire roost. The pivot points have been laid out to triangulate loads and keep the rear end stiff, which helps keep the bearings turning smoothly, and your wheels tracking straight.

Custom tube shapes were developed and the downtube has a tooled reinforcement rather than a traditional weld on gusset. This thicker section reinforces the underside of the downtube/headtube junction without the stress riser created at the edge of a weld on gusset. The front triangle features double welding, which creates a thick but smooth weld and yeilds a significant increase in strength for high stress areas. The TR450 has a tapered headtube with an integrated Cane Creek size top bearing and standard 1.5” bottom intended to run a zero stack cup. The shape of the headtube better matches the toptube and downtube size and shape, and leaves plenty of clearance for fork crowns. The short headtube length gives riders lots of room for handlebar height adjustment and an aggressive low stance.

Mud shedding was a key concern in the design of the frame. Excessive pockets were avoided and many parts, like the dropouts and rear triangle yokes, are hollowed from the inside and smooth on the outside so mud won’t collect in hard to reach places. The smooth aesthetic carries over into the lines of the frame. When viewed from the side, the linkage stays hidden from view right up to the sag point. This is a clean frame, any way you look at it. In the End, the TR450 was designed to be a bike that could be ridden hard and put away wet while being a dependable top level race bike you can trust race after race.

FRAME FEATURES: