The size of the frame determines handling characteristics. The position of the rider is determined not by the frame but by the adjustable features of the bike such as the stem, handlebar, seat post, crank arm length and saddle.

1. Frame Size: A properly sized bike is based off of different dimensions of the bike frame. Pro Fitting Solutions (PFS) uses two different methods to determine proper frame size. First, we input the customers measurements into a computer program then second we use this data to position the customer on our PFS sizing cycle. There are many determining factors to proper frame size listed below are explanations of the key points:
   a) Top Tube length and head tube angle both affect wheel base. Wheel base determines weight distribution. The length of the wheel base determines how the bike will steer. ( i.e.. shorter =faster and longer=slower) This is one of the key components in determining frame sizing.
   b) Seat Tube angle determines how far you can adjust the seat back and forth. It also determines the true length of the top tube.
   c) Head Tube length determines how many spacers you will need to show when setting up proper handle bar height.
   d) Seat Tube length affects the clearance between the riders inseam and the top tube (stand over height). This also determines how much seat post will be exposed.
2. Positioning: Your position on the bike determines if you are comfortable and bio mechanically efficient. Proper positioning is based on a cyclist’s flexibility. Since flexibility is what our fitting system is based on you may find periodically the need to readjust your position.
3. Foot Alignment: If you experience pain in either your foot, knee or hip, it could all be stemming from your cleat alignment. These pains are normally associated with either Supination, Pronation , Varus, or Valgus discrepancies. We address these problems through laser alignment, Fit Kit R.A.D. fitting tool and cleat shims.
4. Lasers: A common tool used in bike fittings to find a relative center is the plum bob (a string with a weight attached to it.) This works well for static situations. The problem with the plum bob is that when trying to evaluate a moving component of the body it becomes impractical. This is why we now use lasers to identify a relative point on the body or bicycle.
5. Video Analysis: We video tape your fitting so we can show and compare the before and after results of the fitting. This also enables us to show a rider form and technique changes that would otherwise be difficult to explain.