The Canfield Nimble 9: My Singlespeed Race Build (and Why I'm Taking It to Mayhem)

Let me be upfront about something: the Canfield Nimble 9 is not a race bike. Canfield doesn't sell it as one. It's an aggressive, steel hardtail designed for all-around trail riding that can be run singlespeed thanks to sliding dropouts. It's the kind of bike that makes you smile on a Tuesday evening lap and somehow convinces you to go bomb a downhill on Thursday. It is not exactly optimized for zip-tieing a number to the handlebars for XC.

And yet here I am, prepping a singlespeed entry for the annual Mayhem season opener at the YMCA of the Pines in the Pine Barrens of NJ. It's a USA Cycling event so that does draw in some fast riders from all around the North East. I witnessed this first hand two years ago in the XC Cat 2 placing 17 of 24.

Is it the "wrong" bike to race? Probably. But life is full of surprises.

How I Ended Up With a Nimble 9

Having friends that are long-time riders who dabbled in the dark arts of singlespeeding, eventually I was convinced to build one up from an old Vassago and I was hooked. Unfortunately it was so old it had a seized seat post and nearly ate my knees and back being too high, so back into the "pass it on" cycle it went and I was on the hunt.

It started, as many bike purchases do, with a YouTube rabbit hole. Specifically: MTB Party, a channel run by someone who has spent more time thinking about hardtails than most people spend thinking about anything. After watching what felt like several dozen videos on the virtues of steel hardtails and singlespeed simplicity, I was convinced.

I found a used Nimble 9 and pulled the trigger. The previous owner bounced between singlespeed and geared setups and threw in a handful of singlespeed cogs along with the geared SRAM NX drivetrain when I bought it. The NX shifter and Ibis handlebars eventually found a new home on my Kona Sutra LTD flatbar conversion project, the cassette on a trainer. The cogs stayed.

The Build

This isn't a stock Nimble 9 anymore. Here's where it stands heading into race season:

Frame: Canfield Nimble 9 — steel hardtail, 29er, medium. Bought secondhand, no regerts.

Fork: Fox 34 Rhythm. The previous owner had a 150mm airshaft installed — I swapped it for a 140mm to take some slack out of the front end. Makes it a bit more responsive and less dive-y for the kind of riding I do on this bike. Small change, noticeable difference.

Cranks & Chainring: Canfield AM Cranks with an e*thirteen HELIX aluminum 32t chainring — 3-bolt interface, -3mm offset, BSA threaded 68/73mm BB. Canfield sells these as a combined kit, which takes the compatibility guesswork out of it entirely (and founder Lance Canfield will personally lay any installation questions to rest, like he did for me — email Support). It's a clean, stiff setup.

Cockpit: This is where I made the biggest changes from the previous owner's build. Swapped out the Ibis bars for a PNW Range Gen 3 Handlebar with Loam Grips. Paired with a PNW Loam Dropper Post (150mm) and Loam Lever Gen 2. The PNW setup is cohesive, well-built, and honestly underrated — the dropper action is smooth and the lever feel is clean. Only the Ibis 50mm stem and Cane Creek headset remains.

Brakes: Shimano Deore BR-M6100. Haven't touched them and I usually stop in time.

Tires: Maxxis Forecaster up front, Ardent Race in the rear. This combo works well for the mixed terrain I ride in northern New Jersey — enough grip up front where it counts, faster rolling in the rear. Not changing this for race day.

Wheels: Hunt Trail Wide aluminum with their RapidEngage 5-degree hubs. Love 'em. Upgraded from a mullet mixed set of Spank and WTB.

Gearing: I normally run 32/19, occasionally dropping to 32/20 on seriously hilly terrain. For racing I dial this in based on the course.

Prepping for Mayhem

The course is flat. Like, genuinely flat. Pine Barrens flat. Sandy, fast, and relentless in a way that's completely different from anything I normally ride in northern Jersey. About 200 feet of climbing in 7-8 miles. That changes the gear math significantly.

I went into my pre-ride with three cogs in my pocket:

• Wolf Tooth Aluminum Singlespeed 17t Cog — new, 7076-T6 aluminum, 4.5mm base. The likely race day choice given the flat terrain. Faster gear, lets me keep cadence up on the straights without spinning out.
• Box 18t Cog — came with the bike from the previous owner. The backup option if the course had more resistance than expected.
• Unknown 16t Cog — it's round and aluminum with 16 teeth. If 17t felt too easy, I'd have tried it.

Pre-ride confirmed it: 32/17 is the call. Flat, fast, and the Wolf Tooth 17t stays on for race day. The one little climb wasn't bad with momentum. Going to the 16t would mean more torque throughout and the 18 would have spun out at any type of speed.

Honest Take

As for goals — I'm not going there to podium unless it's a field of three. This is a season opener, a shakedown, and honestly an excuse to try something completely different from my usual terrain. I want to try racing singlespeed MTB because it's fun, because it strips everything back, and because showing up to a race on a steel hardtail with one gear is a choice that requires a certain kind of commitment to the bit.

The Nimble 9 isn't the ideal race bike. That's kind of the point. It's part of the journey — and sometimes the "wrong" bike on the right day is the whole reason you showed up.

Race report coming after Mayhem at the Pine Barrens. We'll see how the 32/17 holds up.

Questions on the build or gearing decisions? hello@dialedfordirt.com