IRD / Interloc Racing Design

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IRD / Interloc Racing Design

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.

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

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.

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.

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.

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) 🍒

01/14/2026

Before the internet was cool, we developed the TL5 with John ‘Sweet Spot’ Castellano and Dave Ijams. (This looks like a preproduction version)
It had a novel trailing link design to combat the nose over feel when you braked with normal telescoping forks (Anti-Dive). The linkage met bumps more directly than normal forks, so it would not exhibit stiction like the less stiff forks of the day. The axle would move back then swing up.

Suspension and damping were handled by two different diameters of elastomers. The structure was CrMo and aluminum and weighed about 4 lbs, heavy in those days. Funny how no one would bat an eye on the weight now for a shock fork. Manufacturing was done by Hodaka in Taiwan.

Clip from Marin Mountain Bike Museum

12/29/2025

These fun BMX-tired mini velos were on our feed a lot in 2025. And VO has a lot to do with originating and opening eyes to what is special about this new breed of bike. This hot build features our brake levers and the made in Japan Growtac brakes.

Get • The wait is finally over!!! We have finally finished Jameson’s and Raffelflauge Neutrino!!! While we didn’t win the raffle after spending a whole paycheck on it, we are very thankful Jameson, a very loyal and customer did. He came in with a really good idea of what he wanted and after a few test rides on ‘s neutrino we had it all locked in. Hope y’all love it as much as we do!!!

And everyone wish Jameson a very happy !!!

12/23/2025

.bicycle - Riding bikes should take the rider to all kinds of places, and one of those places is the Fun Zone!

This Wolverine had been built and ridden as a drop bar bike for many years and miles, but the rider was looking for a change. Enter an IRD MCX monstercross carbon fork and a flat bar and this thing rides like a completely different bike (almost like a 90’s mountain bike). Adding to the change, a headset and chainring bring the bike home and give the feeling of a bike that is just as happy tooling through the neighborhood as charging in Marin Co. Every bike deserves a glow up every now and then.

12/19/2025

Just a thing of beauty! 🥰

Get • This beauty is heading back up to Portland to . I got to try something on this one that I’d been wanting to do with the wishbone. Super happy with the results. These things take a village to build and I couldn’t do it without help from and

Address

San Francisco, CA

Website

http://www.interlocracing.com/

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