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Transition Spire Carbon XT
Transition Spire Carbon XT
Transition Spire Carbon XT
Transition Spire Carbon XT
Transition Spire Carbon XT
Transition Spire Carbon XT
Transition Spire Carbon XT
Transition Spire Carbon XT

Transition Spire Carbon XT

Transition Bikes
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Transition Spire Carbon XT

Take on the biggest terrain without the penalty, Long travel doesn’t have to mean single purpose

The Transition Spire blends DH bike capability with mid-travel efficiency in such a way it’s almost two bikes in one. A delicately tuned pedaling and pumping platform, super supple beginning stroke sensitivity and all the travel you could ask for makes for a mind bending ride. Happily climb up to your favorite challenging descent, then cruise on over to your local flow trail and you’ll be rewarded on both ends of the spectrum. Don’t be fooled though, while it’s no one-trick pony, the Transition  Spire lives to push your limits. Get in-Spired.

Product Transition Spire Carbon XT Bike
Model Year 2021
Riding Type Enduro / All-Mountain, Freeride / Bike Park
Rider Unisex
Sizes and Geometry
S, M, L, XL, XXL View Geometry
Wheel Size 29"
Frame Material Carbon Fiber
Frame Material Details Full carbon fiber (front triangle, rear triangle, and rocker) made from Japanese Toray fiber with a tailored blend of 24T and 30T materials
Rear Travel 170mm
Rear Shock FOX FLOAT X2 Factory, 2-position, 205mm x 65mm
Fork FOX FLOAT 38 GRIP2 Factory, 44mm offset
Fork Travel 170mm
Head Tube Diameter Straight
Headset FSA. No.55R/57, 56mm/56mm press-in cups, zero stack
Handlebar ANVL Mandrel Alloy 35, 800x20mm (S), 800x30mm (M-XL), 800x40mm (XXL)
Stem ANVL Swage, 40mm
Grips Sensus Lite
Brakes Shimano XT M8120 with Shimano RT86 203mm rotors
Brake Levers Shimano XT M8120
Drivetrain 1x
Shifters Shimano XT M8100
Front Derailleur N/A
Rear Derailleur Shimano XT M8100
Chainguide OneUp Components Bash Guide
Cranks Shimano XT M8100, 165mm
Chainrings 30 tooth
Bottom Bracket 73mm BSA threaded
Pedals N/A
Chain Shimano XT M8100
Cassette Shimano XT M8100, 10-51 tooth
Rims DT Swiss EX 1700 SPLINE 30
Hubs DT Swiss 350 Straight Pull 36SL
Spokes DT Swiss Competition
Tires Front: Schwalbe Magic Mary, Super Trail, Soft, 29"x2.4"
Rear: Schwalbe Big Betty, Super Trail, Soft, 29"x2.4"
Saddle ANVL Forge Cromo
Seatpost OneUp Components Dropper
Seatpost Diameter 31.6mm
Seatpost Clamp 37.0mm standard single bolt
Rear Dropout / Hub Dimensions 148x12mm Boost
Max. Tire Size 29"x2.6"
Bottle Cage Mounts Yes
Colors Huckleberry, Primer Grey
Warranty Lifetime
Weight 33 lb 0 oz (14,969 g)

Geo adjust chip at the lower shock mount for high and low geometry settings

56mm/56mm press in headset cups are compatible with reach adjust headsets when used with a dual crown fork

Molded rubber frame protection on the downtube, chainstay, and seatstay

Fully guided internal dropper and rear derailleur cable routing in downtube and chainstay, external rear brake cable routing

GiddyUp suspension layout is tuned to work with both air and coil rear shocks

Enduro Max sealed bearings with bearing shields on main pivot

Stock 170mm rear travel with a 65mm stroke shock, optional 160mm rear travel with a 60mm stroke shock

27%-33% suggested sag range

SBG geometry and size-specific chainstays

SRAM UDH derailleur hanger

Accessory mount on underside of top tube