POSITION ONE Bikes offers you one of the best BMX Racing Bikes for your first ride and race on track and help get you on the way to becoming a future BMX Champion. We offer 5 sizes in the Position One BMX Racing line. We start by using the winning race proven geometry from our championship winning brand, Chase BMX, to create a truly certified BMX racing bike. We then load the POSITION ONE bikes with real BMX racing parts, giving you not only a real race bike, but the best value for your money in a entry-level race bike, from a company that actually races.All of our POSITION ONE racing bikes feature a 6061-t6 alloy frame with integrated head tubes, race perfect geometry, 100% chromoly bars and forks, sealed hubs, double walled rims, and raced tuned parts from great companies like KMC, VEE RUBBER, and ARISUN. Frame Mini 17.25" Top Tube Fork Full Cr-mo Integrated Reducer Sealed Bearing 1-1/8th outer with 1” Inner bearing for 1” steer tube Chain Ring 5 Bolts 38 Tooth Crank Alloy 140mm Chain KMC Z33 Rims Double Wall 24H 1-1/8" Tires Arisun XLR8 1-1/8" Seat & Seat Post Mini Combo 25.4mm RECOMMENDED SIZE: 3' 7,3" - 4' 1,2" / 1m10 - 1m25WEIGHT: 7.1 KG / 15.658 LB without pedals GEOMETRIES FRAME SIZE TT CS min LR AF SA HT SPL BBH WHEELS Micro 16.15 - 410.21 mm 10.85" - 275.6 mm 1.8" - 46 mm 71° 69° 4" - 100 mm 8" - 203.5 mm 9.10" - 231.14 mm 18×1" Mini 17.25" - 438.15 mm 12.5" - 317.5 mm 1.8" - 46 mm 72° 70° 4" - 100 mm 8.65" - 219.71 mm 10.6" - 269.24 mm 20×1-1/8" Junior 19" - 482.6 mm 13" - 330.2 mm 1.8" - 46 mm 73° 72° 4" - 100 mm 8.75" - 222.25 mm 10.6" - 269.24 mm 20×1-1/8" Expert 19.5" - 495.3 mm 13.25" - 336.55mm 1.8" - 46 mm 74° 72° 4" - 100 mm 8.75" - 222.25 mm 11" - 279.4 mm 20×1-3/8" Pro 20.5" - 520.7 mm 14.25" - 361.95 mm 1.8" - 46 mm 74° 72° 4.33" - 110 mm 9.25" - 234.95 mm 11" - 279.4 mm 20×1.75"