"PARVILLA CUSTOM f i t is one of the most advanced fitting experiences available!"    

All fittings are by appointment only.

Online scheduling


Call: 443-949-7130

As we strive to be better cyclists we often forget about the obvious, our position on the bike. We spend countless hours training for races, century rides and triathlons but spend no time on our position, and then assume that we are riding efficiently. Sound about right?

Fitting is our passion at Parvilla Custom f i t, it is in our soul and it is what we love to do. In our quest to find the perfect position for each of our customer’s individual needs, we have invested in the absolute best technology in the world. In 2011 we were the first studio in the Mid-Atlantic to invest in a computer controlled fit bike. In 2012, we were the first again when we combined our Guru Legacy DFU with Retül’s 3D Motion Capture System and began to set the pace in Dynamic fitting. In 2013 we were the first studio in the country to upgrade our hardware to Retül’s new "Vantage 7" system. 2014 saw the introduction of PARVILLA CUSTOM Fütbeds by Retül. In late 2015 we added GebioMized saddle pressure analysis and introduced a Medical Fit option, working with a registered PT right in the studio. In February of 2016 we expanded and opened an "appointment only" fit studio in Bethesda to serve the greater Washington metro area. 2017 saw a complete remodel of the Edgewater studio and upgraded our Legacy DFU to a new DFU Generation 2.0. This upgrade makes us the only fit studio in the USA that combines the most advanced computer controlled fit bike with Retul and GebioMized pressure analysis in that our DFU rotates 360 degrees in order to acurately capture both sides of the body. With the 2017 Fall announcement of the new building purchase we opened a BRAND NEW FIT STUDIO at the NEW Edgewater location in January 2018!

Stu Waring, is a certified Retül Master Fitter, Retül Instructor and Certified Level 4 Fitter with IBFI. Stu is a Certified Level 3 fitter with SBCU Retul Fit and has assisted in teaching SBCU Retul Fit Level 2 and 3 Fit courses at Specialized Bicycles in Morgan Hill, CA. In addition to his two certificates from Retul and Body Geometry Fit, he has certifications from all of the leading fit schools and combines methodologies from F.I.S.T, Trek Fit, Bike Fit Kit, PowerFitte and GebioMized. Stu enjoys sharing his knowledge and love of the sport with you in a teaching/learning environment where there is no wrong question.


When millimeters count, and precision is key, we take our time and...

We treat you like a Pro for a day

There is no one perfect fit methodology but there are a few that are very close! We believe that there is nothing currently more accurate than dynamic fitting. Why? Simple, we want to know what your body is doing while your pedaling under load. A static fit, one where you are measured in a stationary position with a fitter manipulating your appendages is simply a close guess at best.

So we have learned from and partnered with the best fitters in the world and then compiled the best of the best to present it to you here. We combine SBCU Retul Fit physical assessment to determine what makes you unique, we use SBCU Retul Fit fitting methodology for positioning the rider and we use our Guru DFU to optimize the rider to the new position seamlessly.

We spend a lot of time on the body. Nearly everyone has some kind of physical issue be it simply fallen arches or a sore back to full hip or limb replacement. It starts with the body and ends with the body. If your body can not maintain the position for the duration, then we have more work to do. Understanding the body and what it is telling us is the most important part of the fit, so recently, we have added GebioMized saddle pressure mapping so we don’t have to guess how your saddle feels. And we have just introduced a medical fitting that gives you the option to have a Physical Therapist work alongside you during your session.

Be prepared to be involved and educated on the wonder of bike fitting!

f i t Partners

SPECIALIZED - SBCU Retül Fit - Industry leader, SBCU Retul Fit is the only bike fit methodology that's ergonomically designed and scientifically tested to improve power, endurance, and comfort. Created by Dr. Andy Pruitt, SBCU Retul Fit brought bike fit into the modern age in thousands of bicycle retailers world-wide. The constant push for excellence in physical assessment protocol, basic through advanced fit methodology and the use of video capture has brought it to the forefront of fit technology.

SPECIALIZED - Retül - Industry leader, Retül 3D Motion Capture technology, simultaneously measures three planes of movement on the rider while pedaling. Retül averages the rider's body movement to provide a comprehensive data set reflecting the rider's position. Only at this point can a bike fit expert properly evaluate changes to a rider's position. Attempts to analyze the rider in a static position will not provide data at the same level of accuracy as 3D motion capture. Based in Boulder, Colorado, Retül has specialized in bike fit technology and training since 2007. The company was acquired by Specialized Bicycles in 2012 and now exclusively provides fit technology for Specialized dealers. Retül is the official bike fit technology for Team Sky, Team Europcar, MTN Qhubeka and Team Dimension Data for Qhubeka

Guru Fit Experience - Indusrty leader, the Guru Dynamic Fit Unit (DFU) revolutionized the fit process in 2010 by drastically increasing efficiency and comfort and by creating an interactive experience for the rider. The original Legacy DFU was the first computer-automated bicycle fitting system in the world that allowed cyclists to feel nuanced differences in multiple riding positions while pedaling. Our Bethesda studio is equipped with a Legacy DFU and Retul.

GURU Dynamic Fit Unit Generation 2.0 now featured in our Edgewater Studio!

The state-of-the-art, computer-controlled GURU DFU Generation 2.0 adjusts your riding position in real-time to maximize your comfort and efficiency. Incline/decline adjustment allows you to test riding positions while ascending or descending to simulate riding conditions.

GURU Optimization™ expands the capabilities of Bike Finder with the addition of comprehensive performance analysis - including in-depth power output, real-time body angle tracking and GURU Virtual Ride™

GURU Bike Finder™ utilizes Rider Scan™ technology to identify the best bike configuration to match your riding preferences.

GURU's Virtual Warehouse™ replaces a conventional test ride by allowing you to select individual models to ride on the GURU Fit System™ - featuring thousands of bikes across all categories (road, cyclocross, mountain, tri, recreation) from major manufacturers.

GebioMizedThe world leader in Cycling pressure analysis tools. Pressure analysis is available for all bicycle contact points including Saddle, Shoe, Aerobar, and Grip or handlebar. This state of the art pressure and force measurement technology was developed in Munster, Germany. GebioMized saddle mapping technology gives the client the ability to visualize the saddle and body interface in real-time, it opens the door to understanding pressure distribution of different saddle positions and/or comparison of different saddle types when combined with fitting process.

 All fittings are by appointment only.

Online scheduling


Call: 443-949-7130