Staff Bike Checks | Russ's Mulleted Transition Spire

transition bikes spire with a fox 40 mtb fork a fox dhx2 maxxis tires sram code rsc brakes on a black background

A Fox 40 Factory Series Standing Tall and Proud

The Build

    For this Lost Co Staff Bike Check, we take a look at a mulleted aluminum Transition Spire, owned by our head mechanic, Russ. Aiming to bridge the gap between Transitions downhill rig, the TR-11, and their mixed wheel bike, the Patrol, this build is certainly a departure from what you’d typically expect to see on Transitions long-travel 29er.  

    Russ’s intention with this bike was to build up something that would ride similar to a DH bike on the steep, loose, and technical downhills while still being reasonably manageable on the seemingly never ending PNW logging road climbs. The most notable part of the build is undoubtedly, the 190mm Fox 40 fork and 27.5-inch rear wheel which replaces the stock 29-inch wheel. Beyond that, Russ didn't go too crazy with the build, opting to put money where he felt it really mattered, the suspension, wheels, handlebars, and brakes.

    A Fox DHX2 keeps the rear end plush and, being owner and operator of Cascade Racing Designs, it's only natural to see this bike dressed in CRD components like their 803mm carbon Stooge Handlebars and carbon Apex rims which are laced to Industry Nine Hydra hubs. Russ finished off the build with a SRAM GX drivetrain, Code RSC’s brakes and 220mm Centerline rotors. For tires, a Maxxis Shorty keeps the front end controlled in the slop and a Maxxis Dissector helps the bike pedal slightly faster than Russ's alternative rear tire, another Shorty, which he has mounted to a secondary rear wheel reserved when uphill pedaling isn't required.

Frame: Transition Spire Aluminum- Size Large

Fork: Fox 40 Factory Grip2 - 190mm

Shock: Fox DHX2 - 205x65mm

Crankset: SRAM GX Eagle DUB - 165mm

Chainring: SRAM GX Eagle - 30t

Derailleur: SRAM GX Eagle

Shifter: SRAM GX Eagle

Chain: SRAM XX1 Chain - Copper

Cassette: SRAM GX Eagle 10-52t

Pedals: Anvl Tilt - Arctic Bronze

Hubs: Industry Nine Hydra 148/110

Front Rim: CRD Apex 29"

Rear Rim: CRD Apex 27.5"

Front Tire: Maxxis Shorty 2.4 DD MaxxGrip

Rear Tire: Maxxis Dissector 2.4 DD MaxxGrip

Saddle: ANVL Forge Cromo

Seatpost: OneUp Dropper V2 - 210mm

Dropper Lever: Wolf Tooth ReMote Light

Bars: CRD Stooge 803

Stem: Spank 40mm Direct Mount

Grips: ODI Elite Pro Lock-on

Brakes: SRAM Code RSC

Rotors: SRAM Centerline - 220mm/220mm

transition bikes spire logo raw alloy
fox factory 40 fork fox dhx2 rear shock on a transition bikes spire raw alloy

Premium Fox Suspension with a DHX2 in the rear and a Factory Series 40 up front

sram code rsc brakes on a transition spire collage

CRD Stooge Bars and SRAM Code RSC Brakes Compliment The Cockpit

crd apex rim
industry nine hydra hub on a mtb wheelset

CRD Apex Carbon Rims Mounted to Industry Nine Hydra Hubs

sram gx eagle crankset and rear derailleur with anvl tilt pedals

GX Drivetrain and ANVL Tilt Pedals

transition bikes raw alloy spire sticker
transition bikes raw alloy spire head badge

"Born in Bellingham, Washington"

russ building a dt swiss mtb wheelset


So there you have it, a unique build by our Head Mechanic Russ.

Building up your own bike or looking for an upgrade? We stock almost all the parts we have on our bikes and love to geek out.

Got questions? Feel free to shoot us an email or give us a call!




Brodie Hall



Bellingham, WA

Current Bikes: Banshee Titan

Bike Size: Medium

Favorite Trails: Spacewolf, Galbraith / Graysill Connect, Coalbank Pass

About Me: I grew up in the San Juan Mountains of Southwest Colorado where high country epics are the local favorite. After moving to the PNW in the summer of 2021, I'm really loving the steep, loamy, and rooty terrain that Bellingham has to offer. Jumps are growing on me, but still not really my thing. Historically, my bike of choice is a mid-travel 29'er, but the steeper, faster terrain in this area has me curious about a longer-travel mullet bike.