This is a "machine-selection optional" part.Please choose a vehicle to see the options specific to your machine,choose from all of the options below and add to cart.

Choose a vehicle:

User Tip: If you're unsure of your vehicle type, you may skip the machine type selection box.

» Log in to use your Rider Profile Machines
IRC TR-11 Trials Tire (Tubeless)
  • View Larger
  • Video

Customer rating on this product:

Read reviews ( 11 ) | Write a review

Live Chat Software

4.00x18 IRC TR-11 Trials Tire (Tubeless)

Part# 1141390001

Our price: $109.88

MSRP: $195.95 - You save $86.07 (44% off)

Get $5.49 in Quick Cash

View Product DetailsSee stock sizes for your machine (Machine Specs)

5+ In-Stock

  • "Customer service is priority #1 at Rocky Mountain ATV/MC. We value our customers and strive to be the best shopping experience- when you buy from us, you are buying lifetime service."

    -Dan Thomas, CEO and Founder

  • Returns

    We take pride in offering no hassle returns. In the event of a return, please call, email or chat with us to receive a solution to the problem. For apparel that doesn't fit quite right, Click here to see our Fit Guaranteed Program.

  • Warranties

    We will stand behind all products we sell with regards to manufacturing defects in workmanship and material. Most products are limited to the manufacturer's warranty. However, we will do everything in our power to take care of the problem.

  • Have questions?

    Live Chat: Click here (Leave email if after hours)
    Call us: 1 800 336-5437
    7am-7pm Mon-Fri 8am-4pm Sat (Mountain Standard Time)


  • Radial design has a dual-rubber compound, softer rubber for the tread and harder for the sidewalls giving incredible grip and handling.
  • Tread blocks create a natural wide, flat footprint.

IRC TR-11 Trials Tire (Tubeless) Reviews

Your review could win you a $100 or $500 gift card!

Each review submitted enters you into a $100 gift card monthly drawing, and a $500 gift card quarterly drawing!

0 of 0 people found this review helpful.

Awesome grip with rtough sidewalls for Tubliss

Comments On Nov 29, 2015:IRC TR-11 front tube-type running low with Tubliss lasted 1700 miles and 184 hours (95% dirt) but the sidewalls are just not strong enough.
Eventually there was a "flex zone" along the sidewall and cuts appeared.
IRC TR-11 rear is tubeless with strong sidewalls and is still running even though the knobs are down to about 2 mm.
I replaced the front with a Pirelli M43 which is looking good so far.
I will soon buy the same TR-11 again to replace the rear. The tread rubber is like tough closed cell foam. Extraordinary grip. And I expect the first one will go to 2500 miles so that is not bad.

Was this review helpful?

1 of 1 people found this review helpful.

Excellent tire for enduro racing

Comments On Nov 26, 2015:Trials tires work really well here in the Ozark Mts for enduro racing and single track riding. I was a big fan of the old Michelin trials tire before they sadly stopped making it, and the new Mich trials tires are both more expensive and inferior in performance, not a good combination. I tried a few other trials tires to find the right replacement, and this is it. Excellent traction, the equal of the old Mich at least, and great durability. I've run through 2 of them now and each one has been awesome.
Running ultra heavy duty tubes, 8psi, KTM 2 stroke.

Was this review helpful?

0 of 0 people found this review helpful.

My favorite trials tire !

Comments On Dec 27, 2014:Great tires ! Prefer the IRC over the Dunlops. Great feel and hold up very well. These are on my Gas Gas TXT250 and look forward to running them on the GG Raga 300.

Was this review helpful?

1 of 1 people found this review helpful.

IRC Radial Trials Tire

Comments On Sep 19, 2012:I use these tires on the rear of my KTM 300 XC. They deliver excellent traction in all conditions and long wear. I use the tubliss system and am very comfortable runnning higher speeds with this tire. I previously used the michelin tube type trials tire, which also delivered good traction. However, it was considerably more unstable at higher speeds.

Was this review helpful?

0 of 0 people found this review helpful.


Comments On Mar 21, 2012:I go back and forth between these and the Michelins - I honestly think these are a great value for the money - soft enough for great grip and still wear quite well - I use them on enduro bikes but have used them on my trials bike (when I had one) as well.

Was this review helpful?

1 of 1 people found this review helpful.

Don't Buy if you ride faster than 40mph!

Comments On Nov 27, 2011:I bought the IRC TR-11 trials for the 2011 LA-B2V dualsport ride. On pavement, if you exceed 40mph the sidewall flex is so bad it is difficult to control the bike. On dirt roads it's a little bit better, you can get up to 45 or so before the wobble gets too bad.
However, if you never exceed 40mph, the tire is amazing! Great hook-up in all conditions, including sand washes. Climbing decomposed granite and stair steps is a breeze. Wet, loamy soil is not a problem either.
On day two, after @ 100 miles of powerline roads & jeep trails, the center row of knobs had sheared off completely - all the way around the tire. With the center row gone the tire was fairly stable up to 50-55mph on graded dirt roads and pavement.
Great tire for slower trail riding. Stick with a MT43 for dualsport use or high speed conditions.

Was this review helpful?

0 of 0 people found this review helpful.

off road trail use on KTM 300 Christini

Comments On Jan 07, 2011:Off road use in mountains and desert rocks it gives good hook up. Tire lasts longer then knobes and works when half tread is gone. It does not stop as fast as knobes.

Was this review helpful?

0 of 0 people found this review helpful.


Comments On Jun 24, 2008:My dad had theses tires on his 1972 honda and they've gone like 3428 miles and they are still working excellent!!!

Was this review helpful?

3 of 3 people found this review helpful.


Comments On Mar 15, 2008:I ride rocks, lots of rocks. Rock ledges, loose rocks, big rocks, little rocks. And all these rocks have mud and water somewhere between them.
This tire is like cheating. Run 12lbs air and you will have to get used to the traction, you WILL kill the motor learning the traction.
I got 1200 miles on my first one, 1100 on my second and now have 700 on my third. I'll never buy a knobby tire again.

Was this review helpful?

0 of 0 people found this review helpful.

Great traction

Comments On Mar 13, 2008:This was my first trials tire- and I was impressed. Traction was great, wear was phenomenal (I got 1500 hard off-road miles before I cut the side wall; normal knobbies give me around 700 miles). The price has gone up a lot since I purchased mine ($72 irc) so I will probably try the Dunlop trials tire next. Oh yeah- I might recommend the tube version because I could never get it to seat. & bring a repair kit- flat = you're NOT moving.

Was this review helpful?

RM Cash ProgramParts Finder