Typical street and park riders will choose a 25TT sprocket; trail riders slightly taller in the 28TT range, and flatland riders much shorter with 18TT sprockets. The result is a longer lasting, better riding frame. BB bearings accommodate 19mm or 22mm spindles, while larger crank spindles are being introduced into the market. To me, tire selection is one of the more critical aspects of a building or buying a BMX bike. Remember browsing the ads in BMX Plus! The "big bikes" are derived from their racing roots cruisersbut are now available with freestyle geometry. Plus, have a proper look at the pros set ups as they talk us through their bike checks along with close up shots for you to drool over.
Grips can be installed by pushing them on with an air compressor or rubbing alcohol, and some are "lock-on" grips, which require a tool to install.
From the inner edge of each, the distance should be generally no less then 38mm. For example, a slightly steeper angle - such as Tires affect handling, speed rolling resistanceweight, traction and "cushion". The double-wall rim is the stronger of the two, utilizing extra material for strength. Note the cable routing in Figure 7. However, some flatland riders are beginning to adopt more street riding and going with a wider tire.