最近买了个车架 想自己配东西
然后不懂该如何购买，BB90 BB30是指中轴的标准吗？ 那买同一款套件，例如Ultegra的，那他的东西怎么看符不符合我的自行车
还有例如这样的数字 50T/11-28T 11是11速？ 50 和 28 是大盘小盘的齿数？？
新手求教
另外这个是车架的一些细节，有高手能直接帮我选配件么 =.=
Brand: Trek
Model: Madone 5.9
Frame Compatibility: Mechanical
Size: 52
Year: 2014
SN: WTU295CT5047H
Frame Material: OCLV 500 Series Carbon
Fork: Trek Carbon
Steerer Tube Diameter: 1 1/8" - 1.5"
Head Set Included
BB Width: 90mm (BB90)
Bottom Bracket Bearings Not Included
Seatpost Size: 30 mm
Seat Clamp Included
Front Derailleur Mount: Braze-On
Weight: 4 lbs 07 ozSteerer Tube Length: 227mm
Effective Top Tube: 534mm
Seat Height Maximum: 755mm (C-T)
Seat Height Minimum: 655mm (C-T)
Seat Tube Angle: 74.2o
Head Tube: 729mm
Head Tube Angle: 72.8o
Stack: 547 mm
Reach: 379 mm
Standover Height: 729mm
Rear Spacing: 130mm
