Rotational Impact Protection Fit System Weight Best For Battery Max Torque Motor Range Top Speed Crank Fork Dropper Post Wheels Tire Size Drivetrain Brakes Frame MTB
Transition Bicycle Company
Spire Alloy Deore

Spire Alloy Deore alternate view
Spire Alloy Deore alternate view
Spire Alloy Deore alternate view
Spire Alloy Deore alternate view
Spire Alloy Deore alternate view
Spire Alloy Deore
Spire Alloy Deore

SIZE  Size Chart
Article #

The 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 Spire lives to push your limits. Get in-Spired.


Shimano Deore M6100 1 x 12
Dropper Post
OneUp Dropper Post
Marzocchi Bomber Z1 Air
Tire Size
29" x 2.4"
FrameSpire Alloy 170mm
Rear ShockFox Float X Performance 2 Position (205x65)
ForkMarzocchi Bomber Z1 Air 170mm Travel/44mm Offset
HeadsetFSA NO.55R/57
StemRaceFace Aeffect R (40mm)
HandlebarRaceFace Chester 35 SM (780x20) MD/LG/XL/XXL (780x35)
GripsSensus Lite
SaddleANVL Forge Cromo
SeatpostOneUp Dropper Post
BrakesShimano Deore M6120
RotorsShimano RT70 (203mm)
ShifterShimano Deore M6100
DerailleurShimano Deore M6100
CassetteShimano Deore M6100 (10-51t)
ChainShimano Deore M6100
ChainguideOneUp Bash Guide
CrankRaceFace Aeffect R (30t/165mm)
RimsStans Flow D
SpokesPillar Double Butted
HubsShimano MT410-B
Tire/FrontSchwalbe Magic Mary, Super Trail, Soft (29x2.4)
Tire/RearSchwalbe Big Betty, Super Trail, Soft (29x2.4)
IncludedTubeless Valves & Stans Sealant (6oz)

* Specs subject to change

A. REACH (in)16.1417.1318.1119.0920.08
B. STACK (in)22.7223.2323.7824.2924.84
C. EFFECTIVE TT LENGTH (in)21.0222.2023.3524.5325.67
D. SEAT TUBE LENGTH (in)13.7814.1715.3516.9318.11
E. EFFECTIVE ST ANGLE78.2°77.7°77.2°76.8°76.4°
SADDLE HEIGHT FOR EFFECTIVE ST ANGLE (in)22.0523.6225.9828.3530.71
ACTUAL ST ANGLE72°72°72°72°72°
SEAT TUBE OFFSET AT BB (in)2.482.482.482.482.48
F. HEAD TUBE LENGTH (in)3.744.334.925.516.10
G. HEAD TUBE ANGLE64.0°64.0°64.0°64.0°64.0°
H. CHAINSTAY LENGTH (in)16.9316.9316.9316.9316.93
I. WHEELBASE (in)45.3946.6547.9149.1350.39
J. BOTTOM BRACKET DROP (in)0.710.710.710.710.71
K. ESTIMATED BB HEIGHT (in)13.2713.2713.2713.2713.27
L. STAND OVER HEIGHT (in)26.1826.1826.5027.0127.48
M. FORK OFFSET (in)1.461.461.461.461.46
Rider HeightBike Size
5'2" - 5'6"S
5'6" - 5'10"M
5'10" - 6'2"L
6'2" - 6'6"XL
6'4" - 6'8"2XL

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