The Right Bike Fit for YOU – Guaranteed
We have been competing for more than 20 years, and as Engineers have studied and experimented with bike fit from day one. We have created our own fit protocols, philosophy, and tools, including our patented automated Vertex Fit Cycle (yes we designed, patented and built our own automated computerized fit simulator from scratch). We pioneered online fitting. We focus on aero – triathlon and time trial – bike fitting. We do road bike fits too, but aero is our heart and soul. Thousands of happy clients and countless victories later (including multiple Ironman World and National Champions), we still keep learning and honing our craft every day.
CONCIERGE LEVEL SERVICE: We stand behind and have pride in our work. It actually matters to us that our services help YOU have the best athletic experience possible. Looking for the right tri bike? We will find it for you, and build it to your dream specs and perfect fit. If you have a bike already we will make sure your fit is optimized. Either way, you will LOVE your bike. That is our money-back pledge. If something isn’t right, we will fix it or give you a full refund on any and all fitting charges. No bull. Please talk to any of our thousands of customers. Talk to the coaches who send us their athletes. We look forward to working with you.
Real Athletes, Real Results

National Champion 2018 Aquabike
Dave Davala averages 24.4 mph on 256 watts over 56 miles for the 6th fastest bike split overall and the Long-course National Championship win

70.3 AG World Champion 2018
Tommy Aleksandersen wins the 70.3 World Champs in 40-44 with a wire to wire win, putting 7 minutes on his rivals on the bike. Tommy, a Norwegian, worked with us online.
TTBikeFit Services




The Best Bikes - Built Perfectly for You
We Carry Tri/TT, Road or Gravel bikes from:
Argon 18, Basso, Factor, Look, Quintana Roo, Ventum, Fuji, Litespeed, Open
What Do Our Clients Say?
Dave Davala – In-Person Vertex Fit – National Champion
“Hi Todd: It was a pleasure meeting you today. I was very impressed with your knowledge and professionalism. The bike fit experience was the best I have ever had. For the first time, I feel confident that the bike is fit specifically to me and not just randomly. I will highly recommend you to all […]
Anthony Leroux – In-Person Vertex Fit
“Hey Todd! Just wanted to follow up and say how much better I feel on the bike! I did IM 70.3 Atlantic City in September and posted a 13 minute bike PB, when I was in admittedly not as prepared as 2017. This was in spite of a pretty nasty crash I got into due […]
Meg Pennington – Custom bike builds and fitting
“I wanted to thank you for such an amazing build and fit you did with my Cannondale!! I truly had an absolute blast riding it at the Lake Placid Ironman – and I’m excited to tackle the distance again to apply what I learned. I would not have had such a successful first Ironman without […]
Pat McCrann, Endurance Nation – Multiple in-person fits, custom bike build
“Can’t say enough good things about what you have done for my bike fit and overall performance. Hard to believe you can keep finding more speed for me…thanks!!! (2018 Kona 9:31, 4:45 bikesplit; 2015 IMTX 5th overall amateur, 4:44 bike split) – Pat McCrann, Head Honcho Endurance Nation – Multiple in-person fits and custom bike builds
EC – In-person Fit
I wanted to send you an email just to let you know how GREAT my “new” bike (fit) is! I rode over 100 miles on it last weekend, after the fit, and felt so strong and comfortable. I’m so shocked how effortless the power and speed are now (especially when I’m in aero). And, I’m […]
Marc Eves – in-person Fit on Vertex Fit Cycle
My fitting from last fall won the bike leg in my age group at Ironman Lake Placid, and placed 3rd in my age group to qualify for Kona! Thanks for the fit! See you in hawaii! – in-person Fit on Vertex Fit Cycle
NW – Multiple in-person fits and custom Kestrels
“Just wanted to say thanks for selling me another great bike! My new Kestrel worked great in St. Croix and I got another Kona spot, despite a very choppy swim, strong winds on the bike and heat on the run. For me, it’s still all about the bike”. – NW – Multiple in-person fits and […]
MB, in-person fit and custom Fuji Norcom Straight
“Just wanted to give you a heads up on the race yesterday: The bike was amazing!!! I’ve never felt so strong in a race, and overtook soooo many athletes! Finished the bike in 2.49, 7th time in my 30-34 AG, which I am very very happy with, for my first race this season and first […]
AH – online fit
“I just wanted to send you a quick note to thank you again for the position you gave me last year. I recently finished my second IM 70.3 and dropped about 40 minutes off my bike split. I think its pretty amazing that you’re able to put someone in a good position without ever stepping […]
AD – in-person fit, custom Blue Triad SL
“Yes, Kona bound!!! There were 3 spots and I was 3rd. 🙂 The bike was amazing. It felt like I was flying on the highway stretches and it climbed really well. I was totally comfortable in the aero bars and with the fit. I didn’t have fatigue on the second loop of ending hills. Previously, I […]
TW – online prebuy and in-person fit
“I just wanted to thank you again for the awesome fitting. With your help I won my age group at Ironman Maryland in 10:31 and am going to Kona in 2015! A dream come true! As a 60 year old man with lousy flexibility I am SO comfortable on that bike. Out of 5 hrs. […]
AC, online and in-person fits
“Big thank you for my bike fit, laid down a 5:22 in Chattanooga and went on to PR the run and PR the race with a 10:20 (a 59′ PR)!” – AC, online and in-person fits
Vertex Fit Cycle
We couldn’t find a fit bike that had the features we needed, so we patented and built our own. All in-person fits include time on the Vertex, so the athlete can immediately feel the impact of fit changes. FOr more information, visit vertexfitsystems.com or download the White Paper.
Check out our bike fit podcast on the
Cycling Time Trial Podcast
TTBikeFit BLOG

Bike Availability Update
Quick update on the state of the cycling industry and availability of bikes and components. Short story: it’s ugly and getting worse. The disruptions to supply chains and manufacturing have been massive and continue to ripple like waves through the industry. Factories in Asia continue to be shut down at random times indefinitely. Shipping (on real ships) is an utter mess. This is what happens folks when govts randomly shut things down. No amount of stimulus will help this – the second and third-order effects are just getting revved up. This is coming to many other industries as well if […]

How Fast Was Kona 2018 vs Historical Averages?
The fast year is ALWAYS the year you don’t go. It sure seems that way, right? Well this year the data is indisputable. 2018 is by far the fastest year for the Kona Ironman World Championships in the last 11, and maybe the fastest ever. I haven’t heard how many age-group records fell, but obviously the pro records were smashed and at least the overall female AG record was annihilated by a 45 year old no less (and with it Lisbeth’s 8-year old 45-49 course record). First, let’s talk about “normal” Kona and what can cause it to be fast […]

Craig Alexander’s Ironman Tips Courtesy of the Argon 18 Kona Team Barbecue
One thing you notice in Kona is that some companies go out of their way to support their customers. Lately the bigger names in the bike world are notable by their absence, Cervelo being the exception. Several smaller brands also work hard to make sure their customers are taken care of led by Ventum. Ceepo is another. Argon 18 continues to be a standout, as they have here for years, with their own team of mechanics toiling all week in the Kona heat. You have never seen more Argon 18s, Ceepos or Ventums than you will see here, so maybe […]

Lone Star Adventures: Lisbeth’s Ironman Texas 2016 Race Report
Do I recommend starting an ironman build 7 weeks before a race? My plan was ironman Germany later in the summer but due to circumstances too boring to detail, I jumped on the opportunity to race Texas, giving me, you guessed it, 7 weeks to build and taper. Two goals: race exactly fast enough to secure a spot (i.e., top 2 AG) and minimize damage for quick recovery. I believed, if ironman fit, I could race conservatively and meet my goals. I thought I would give Coach Al a conniption but he jumped at the challenge in Al style and […]

Kona AG Women Bike Split Analysis: How fast do you need to be, and how did Lis do in 2015?
I have been spending some time analyzing Kona bike split data for the last 8 years. Coincidentally, this is when Lisbeth started racing Kona consistently (she also did it in 1996 pre-kids). I wanted to see what years were “tough” years, and how Lis has fared versus the fastest women bikers, fastest overall finishers, and masters women in general. I found the results pretty interesting both on a general basis and relative to Lisbeth’s performance over the years. One reason I undertook this task was that Lis felt she had a bad race this year, finishing second in her AG. […]
2 Bike Fits, 2 Custom Builds, 2 World Championship Qualifications.
Patrick Lager qualifies for 70.3 and draft-legal Worlds on his custom fit and built by TTBikeFit Ventum and Litespeed.