Specialized Fast Trak LK S-Works Tubeless Tire

3.09/5 (11 Reviews)


Product Description

  • 127 TPI Casing
  • 65a Single Compound
  • Aramid Bead
  • Butyl Wrapped Bead to prevent low pressure burping
  • Reinforced side knobs


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Reviews 1 - 11 (11 Reviews Total)

User Reviews

Overall Rating:4
Value Rating:4
Submitted by Gregory J Ceconi

Date Reviewed: August 3, 2013

Strengths:    Lightweight, sheds mud well, great climbing traction, and predictable washout and overall handling.

Weaknesses:    When running tubeless with Stans at low pressure(27-32psi), sidewalls flex. That happens with any tire at low pressure though and is the penalty you suffer for having a light, tubeless tire. Six of one, a half dozen of another. Not sure I like that aspect of tubeless tires in general, as cornering feels floaty and washy, like you ride with a flat.

Bottom Line:   
I have the new 2013 S-Works Fast Trak tires, which are not the old LK(Low Knob). Different pattern with a new tread sipe. Not sure if I like it as much as the old LK's to be honest. That was an awesome tire. Then again, I ran tubes with those and used much higher pressure(35-40lbs).
Not sure if I am a tubeless fan to be honest yet. I never got flats when I ran tubes, but with the new Crossmax ST's, they are a UST spec rim, not really meant to run tubed tires.
Love the traction of using lower pressure, but the tires wash and wander in corners due to low pressure. Almost feel like you are riding a flat, but they don't flat. Weird sensation.

Overall Rating:4
Value Rating:4
Submitted by thumper07 a Weekend Warrior from Fort Lauderdale, FL

Date Reviewed: March 9, 2011

Strengths:    Fast rolling and works well under low pressure

Weaknesses:    none if used for what it was designed for

Bottom Line:   
Tires are great when run on hard pack with low pressure. I run mine at 35 pounds and I weigh 185. I don't run them tubeless. I'm not sold on the whole "tubeless" thing yet. It's not perfected. I have friends who always seem to have problems. I have others who luck out and have none. They still have to carry a spare tire tube with them for when they get flats, which seems a lot more often.

Okay, back to the subject. For hard pack fast rolling low pressure runs, these are great. Hit a sugar sand spot and I slide off the track. They stick very well on rock, roots and other hardened rough terrain. I don't ride in the mud (we don't have mud in South Florida) so I don't know how they'd perform.

Otherwise, I've done 3 races on my set and have been pumping out about 27 miles each saturday and sunday through coral rock and cypress roots and have nothing but confidence inspiring experience with them.

Unless I come across something else, I plan on buying another set when these wear out.

Expand full review >>

Favorite Trail:   Amelia Earhart

Duration Product Used:   3 months

Price Paid:    $50.00

Purchased At:   Big Wheel Cycle

Bike Setup:   Mountain Cycle Fury 5" travel 140mm front Fox all mountain race setup.

Overall Rating:3
Value Rating:3
Submitted by bikerdirragon a Cross Country Rider from Albuquerque, NM

Date Reviewed: November 28, 2010

Strengths:    Very light, VERY fast rolling, great on hardpack, decent grip on anything less than seriously loose rock.

Weaknesses:    The sidewalls suck. Tubeless can be annoying, depending on the rim.

Bottom Line:   
The bottom line is that this tire is great for racing, if you're racing on mostly hardpack, and definitely nothing with rock gardens at all. As a rear tire, it helped my Rumblefish scream up the trails... until the the tire pulled off the bead. No problem. It re-seated pretty fast, so I was able to pump it up on the trail. Sweet! 2 minutes later, the sidewall ripped. While I love the fast roll, and will miss it, had to go for a thicker sidewall. And if you're going to call a tire tubeless ready, it should be tubeless ready. Sorry Specialized.

Expand full review >>

Favorite Trail:   South Boundary, Taos NM

Duration Product Used:   3 months

Price Paid:    $70.00

Purchased At:   Sports Systems, Albu

Similar Products Used:   Too many to list.

Bike Setup:   Fisher Rumblefish II 29er

Overall Rating:2
Value Rating:2
Submitted by jonasneeser a Cross Country Rider from Pocatello, Idaho USA

Date Reviewed: October 9, 2010

Strengths:    Very light. Grips well.

Weaknesses:    Sharp rocks puncture it easily.

Bottom Line:   
Second ride a rock punctured the tred. Sealed it with sealent and went back out. Another sharp rock slit the sidewall. These are race tires but on a rocky course you may not get through the race without a puncture.

Expand full review >>

Favorite Trail:   Katsilometes

Duration Product Used:   Less than 1 month

Similar Products Used:   Panaracer Fire XC Pro. Much heavier but increased durability well worth it.

Bike Setup:   Tubeless. Stock rear tire on 2010 Specialized Epic Expert.

Overall Rating:4
Value Rating:3
Submitted by Just_Ride a Cross Country Rider from Santa Barbara, CA USA

Date Reviewed: May 23, 2010

Strengths:    Light weight, fast, tubeless compatible.

Weaknesses:    The trade off for a light tire is that it is not as rugged as heaver tires. Not so hot in deep sand. I had a tire that wouldn't seal on the sidewall using Stan's. The bike store replaced it without question. Four other tire of this model have sealed without a hitch. Expensive at $60/ea.

Bottom Line:   
This is a light weight racing tire. I would recommend using as tubeless on Roval Control rims or DT Swiss 420SL rims. I would not use on extremely rough terrain. Would recommend for XC racing.

Expand full review >>

Duration Product Used:   6 months

Price Paid:    $60.00

Purchased At:   Local bike store

Bike Setup:   2009 Specialized Epic Expert

Overall Rating:1
Value Rating:1
Submitted by Bikegoodtimes a Cross Country Rider from Siverthorne, Co, Summit

Date Reviewed: March 14, 2010

Strengths:    NONE!

Weaknesses:    Sidewalls have dozens of small holes right from the mfg. Even with 2 oz of Stans they still leaked. When you buy brand new EXPENSIVE UST rims and the tires ruin the whole experience, shame on you Specialized for experimenting on your customers. Never again.

Bottom Line:   
Complete disappointment, almost ruined a 600.00 rim set. Almost every ride was a nightmare. Keep on looking. I have been riding for over 15 years and I don't like it when a manufacture tests its products on consumers. Once again shame on you Specialized.

Expand full review >>

Favorite Trail:   Monarch Crest

Duration Product Used:   1 Year

Price Paid:    $60.00

Purchased At:   U Bikes, Boulder CO

Similar Products Used:   WTB tubed tires, pre UST days. Have ridden WTB tires for over 10 years and love the tread design, great tire. Can't wait to try the new TCS Mutano 2.4 & 2.2.

Bike Setup:   05 Blur LT, Fox F/R, Mavic ST Rims, Scram.

Overall Rating:3
Value Rating:3
Submitted by jimwithaj a Cross Country Rider from New Zealand

Date Reviewed: October 27, 2009

Strengths:    High rolling

Weaknesses:    Sidewalls, no good for tubeless

Bottom Line:   
An awesome hard pack XC tyre if you're using tubes. For tubeless though forget it. Both front and back sidewalls have small tears in them from standard xc riding.
I'm 70kg or 155lb's so am a lightweight.

Expand full review >>

Favorite Trail:   Jacks Point

Duration Product Used:   Less than 1 month

Purchased At:   Came with bike

Similar Products Used:   First tubeless tyre used.

Bike Setup:   Specialized 09 S-Works

Overall Rating:5
Value Rating:4
Submitted by Ledge a Cross Country Rider from Austin, TX

Date Reviewed: October 21, 2009

Strengths:    Grippy, roll well, grips well on all surfaces. lightweight and fast.

Weaknesses:    Aeamid bead a pain trying to seat as a tubeless. tried it tubeless, coudnt get bead to seat, went back to tubes. Only drawback IMO.

Bottom Line:   
Better than I expected.

Expand full review >>

Favorite Trail:   Reimers

Duration Product Used:   3 months

Purchased At:   came on bike

Similar Products Used:   pythons

Bike Setup:   29" Specialized Stump Jumper Carbon hardtail

Overall Rating:2
Value Rating:1
Submitted by The Chaffinator a Racer from Blue Mts Australia

Date Reviewed: October 6, 2009

Strengths:    Weight, rolling resistance, pretty good grip

Weaknesses:    sidewalls - touch a rock and there is suddenly a huge rip that you can't fix.
Price - $100 AUD is ridiculous


Bottom Line:   
These things came on my bike. First ride, the back one ripped on a rock and was written off. The front one lasted a week, before it too suffered a similar fate. They were good to ride on, but the goodness didn't last.
If I could afford two wheelsets, I might run these as race tyres, but if you plan on riding these through rock gardens and the like, look somewhere else.

Expand full review >>

Favorite Trail:   Ourimbah

Duration Product Used:   Less than 1 month

Purchased At:   Came on bike

Similar Products Used:   Specialized Fast Trak LK Control
Kenda SB8 non-tubeless
Michelin xc2 dry non-tubeless


Bike Setup:   '09 Avanti Competitor 2.0, Full XT including wheels, 2010 Truvativ Stylo Team bits

Overall Rating:5
Value Rating:5
Submitted by jminn8086 a Cross Country Rider from Auburn, California

Date Reviewed: June 22, 2008

Strengths:    Lightweight @ 515 per tire; very good rolling resistance; hard pack riding conditions

Weaknesses:    extremely loose or muddy conditions

Bottom Line:   
I recently put these tires on my bike and I have been pleasantly pleased. The tires simply perform better than you would expect for a lightweight low-knob tire. They are excellent in hardpack conditions.

I'm not sure about the other review on the 1.9 LK as I've been training on these tires in Downieville and if there is a course that shreds tires, Downieville's baby heads and downhill qualifies! I haven't suffered a tear, tire leak of any problems. They do not hook up as well on loose climbs or corner as well as more agressive tires in the loose shale, but that's the trade-off for a tire that weighs significantly less (.3 lb per tire).

If you're riding primarily hardpack to loose and looking for a high performance lightweight tire, look no further.

Expand full review >>

Favorite Trail:   Tahoe Rim Trail

Duration Product Used:   3 months

Price Paid:    $55.00

Purchased At:   LBS

Similar Products Used:   Panaracer; Kenda Nevegals;

Bike Setup:   Intense 5.5

Overall Rating:1
Value Rating:3
Submitted by Carl a Cross Country Rider from South Africa

Date Reviewed: May 25, 2008

Strengths:    Weighs 600grams, not bad for XC, relatively good puncture resistance, Good price, easy to seat.

Weaknesses:    They loose air through their sidewalls. Lots of it, compared to other tubeless tires. Gets better with time and sealant.

Bottom Line:   
Very irritating to fit them for the first time. You think you did something wrong... So you refit them and check with soap and water. The first time they were flat in an hour. They were "airtight" in a week. But they still loose more air than all the tubeless tires I have tried.

Expand full review >>

Duration Product Used:   3 months

Similar Products Used:   Crossmark and Larsen TT (maxxis), Kenda SB8, Kenda Kharma, Vredestein Killerbee,

Bike Setup:   Giant anthem. XT stuff, Dt Swiss XR1540 wheels.

Reviews 1 - 11 (11 Reviews Total)

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