IRD / Interloc Racing Design

IRD / Interloc Racing Design

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Interloc Racing Design (IRD) is a bicycle parts maker. Whatever strikes us as being a true need of the cyclist, you can count on us to look into it.

Currently we see ourselves creating high quality components for serious riders, especially hard to find parts that the larger manufacturers have forgot about.

06/11/2026

The 1-1/8” steerer MCX fork is back in stock for QR hubs AND 👉12x100 thru-axle hubs (previously it used the rarer 15x100)
If you need your gravel bike to fit tires wider than 50mm, check us out!

Photos from IRD / Interloc Racing Design's post 06/06/2026

Big climbs. Bigger range. No compromises.

The IRD Rock Jock Asymmetric Jockey Wheel Set rethinks what’s possible from a derailleur pulley. Its smart, eccentric design increases derailleur capacity, helps eliminate chain slack when using wide range cassettes, and maintains the precise shifting performance riders expect from Shimano 11sp and lower drivetrains.
Upgrade your range without replacing your derailleur.

Photos from IRD / Interloc Racing Design's post 05/29/2026

👍👍

Hannah leads the city of Raleigh’s micromobility program - so you know she’s gotta have a fire commuter.

She says “when I moved to Raleigh, I transformed my only bike into my “car” - which meant adding racks + a basket + other features to make riding loaded feel more comfortable. Several thousand miles later, I learned a lot about what I liked about that setup (and what I didn’t!) to build this bike. The biggest change being going from a aluminum + carbon fork frame to a fully steel frame. And custom wheels perfect for supporting heavy groceries. I can go fast (if I must!), but speed wasn’t the primary goal of this build. It was utility, fun, and comfort.”

She definitely made a great choice using an Space Horse for her new car.

The components she landed on balance performance and longevity well. Plus there’s touches of steez from with a beautiful stem cap and who added a few extra braze-ons and a color shifting harlequin paint job.

For those of you looking for a bike painted by you’ll have to get a brand new custom one! He’s not taking any refinish work for the foreseeable future.

Thanks for trusting us to build up a practical and pretty bike Hannah!

Photos from IRD / Interloc Racing Design's post 04/07/2026

Our Airdrop post and Polaris cranks on this bike party special.

Metropolis Cycles PDX -
Just Junk Yard Do**in
All-City Cycles

日東隆久
TERAVAIL
Velocity USA
𝚂𝚞𝚛𝚕𝚢 𝙱𝚒𝚔𝚎𝚜

Photos from IRD / Interloc Racing Design's post 03/27/2026

Our Polaris Crank in the spring sunshine. Available as arms/bb only or as a Full Kit, which includes 38t 1x ring and 110/74 bcd spider with extra sub-compact 42-26t rings installed. Double here fit road front derailleurs.
Check out our website for more details.

Photos from IRD / Interloc Racing Design's post 03/20/2026

Happy (Bike) Friday everybody!

What a loaded All Packa build by ! 🍔
I am sure our humble Cafam levers are keen to be hanging on this versatile bike built with Nitto, Paul and White Industries components.

Photos from IRD / Interloc Racing Design's post 03/12/2026

Airdrop Dropper Posts are back in stock in the 125mm travel. Minor improvements were made to the lever. Still the only 27.2mm dropper in silver.

Photos from IRD / Interloc Racing Design's post 02/25/2026

Our minimalist looking Cafam-S short pull levers and Gordo silicone foam grips look pretty on this fancy lugged Riv Roaduno, which being single speed is somewhat minimalist, too.

Build by

Rivendell Roaduno🩶

◼︎Build List
*Rivendell Roaduno (51)
*Nitto B357 Choco bar
*Nitto Tallux stem
*IRD Cafam lever
*IRD Gordo grips
*Bluelug YMC crankset
*ACS Paws 4.1 freewheel (17t)
*MKS Gamma pedal
*Tektro R559 brakes
*Panaracer Gravel King slick (650x42b)
*Nitto M-1B front rack
*Greenfield Kick stand
*Sun rim CR18 rim (650b)

#자전거

02/19/2026

Thanks for putting our Front Derailleur Fiddler on the field.

“Some folks get excited when the latest wireless robot shifing, keep those batteries charged, e-lec-tronic drivetrain drops. Me? I think this is bloody genius.
Gevenalle CX f/d
IRD f/d Fiddler allows a front derailleur designed for 45mm max chainline to be used on a crank with a 50mm chainline
White Industries *gasp* square taper cranks with 38/24 rings.”

01/27/2026

New cranks for MightBeneficial (Reddit)
He slapped on our Polaris spider and double rings on to 100% Pure crank arms on his Atlantis. (Pedals are MKS Aurora) 🍒

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Location

Address


San Francisco, CA