The 2018 Meybo Bicycles Holeshot BMX race frames are constructed out of 6061 T-6 aluminum tubing that is square tapered and multi-butted for the ultimate strength and rigidity while keeping the frame light and aggressive. The Meybo Bicycle line of Holeshot frames are the official race frame of the Dutch National Team and the performance has been proven on tracks around the world.The Mini and Junior frames feature a 1" integrated head tube, threaded Euro bottom bracket shell and 10mm dropouts.The Expert, Expert XL and Pro L frames feature a 1-1/8" integrated head tube, threaded Euro bottom bracket shell and 10mm drop outs.The Pro 24" frame features the same bottom bracket and dropouts of the above sizes but does move to a tapered head tube for 1-1/8" to 1.5" headsets.The Pro XL, Pro XXL, Pro XXXL, and Pro XXXXL sizes feature the tapered 1-1/8" to 1.5" head tubes along with a BB30 bottom bracket shell and a closed 15mm drop out. The frames come with adapters for both 10mm and 15mm female axles and double as built-in chain tensioners.NOTE: Please note the specific headset and bottom bracket required for each frame. The Pro XL frames and larger require the BB30 bottom bracket which are available for your specific crank. The closed dropouts on these sizes require the use of a female axle hub or a hub with a thru-axle.Frame Specs/Geometry:MINIHead Tube angle: 73Seat Tube angle: 69.2Top Tube length: 447mm / 17.5"Chainstay length: 330mm / 13"Head Tube size: 1"Seat Post size: 22.2mm10mm dropouts with built in chain tensionersEuro BBWeight 2.55lbs/1160gJUNIORHead Tube angle: 73.5Seat Tube angle: 70.7Top Tube length: 473mm / 18.6"Chainstay length: 340mm / 13.3"Head Tube size: 1"Seat Post size: 22.2mm10mm dropouts with built in chain tensionersEuro BBWeight 2.66lbs/1210gEXPERTHead Tube angle: 73.5Seat Tube angle: 69.8Top Tube length: 495mm / 19.5"Chainstay length: 345mm / 13.5"Head Tube size: 1 1/8"Seat Post size: 25.4mm10mm dropouts with built-in chain tensionersEuro BBWeight 3.02lbs/1374gEXPERT XLHead Tube angle: 73.5Seat Tube angle: 71.6Top Tube length: 521mm / 20.5"Chainstay length: 350mm / 13.7"Head Tube size: 1 1/8"Seat Post size: 25.4mm10mm dropouts with built in chain tensionersEuro BBWeight 3.1lbs/1408gPRO LHead Tube angle: 74Seat Tube angle: 73.8Top Tube length: 530mm / 20.9"Chainstay length: 362mm / 14.2"Head Tube size: 1 1/8"Seat Post size: 27.2mm10mm dropouts with built-in chain tensionersEuro BBWeight 3.34lbs/1515gPRO XLHead Tube angle: 74Seat Tube angle: 74.1Top Tube length: 540mm / 21.3"Chainstay length: 377mm / 14.8"Head Tube size: 1.5"Seat Post size: 27.2mm15mm dropouts with built in chain tensioners and 10mm adaptorsBB 30 Bottom BracketWeight 3.56lbs/1615gPRO XXLHead Tube angle: 74Seat Tube angle: 74.4Top Tube length: 552mm / 21.7"Chainstay length: 386mm / 15.2"Head Tube size: 1.5"Seat Post size: 27.2mm15mm dropouts with built in chain tensioners and 10mm adaptorsBB 30 Bottom BracketWeight 3.58lbs/1627gPRO XXXLHead Tube angle: 74Seat Tube angle: 75.6Top Tube length: 565mm / 22.25"Chainstay length: 390mm / 15.3"Head Tube size: 1.5"Seat Post size: 27.2mm15mm dropouts with built-in chain tensioners and 10mm adaptorsBB 30 Bottom BracketWeight 3.64lbs/1655gPRO XXXXLHead Tube angle: 74Seat Tube angle: 76.3Top Tube length: 577.6mm / 22.74"Chainstay length: 390mm / 15.3"Head Tube size: 1.5"Seat Post size: 27.2mm15mm dropouts with built in chain tensioners and 10mm adaptorsBB 30 Bottom BracketWeight 3.71lbs/1685gPRO 24"Head Tube angle: 74Seat Tube angle: 66.3Top Tube length: 560mm / 22"Chainstay length: 385mm / 15.1"Head Tube size: 1.5"Seat Post size: 27.2mm10mm dropouts with built-in chain tensionersEuro BBWeight 3.91lbs/1775g