If you have a BB30 crankset (30mm diameter aluminum spindle) this measurement will determine whether it is a long or short spindle:
}SRAM G2 R Disc Brake Caliper Assembly - Post Mount Diffusion Black Anodized A2
}Vittoria Terreno Dry Tire - 700 x 38 Clincher Folding Black/Tan G2
Length: 136 millimeters / 5
} DISC BRAKE CALIPER HARDWARE KIT - (INCLUDES BLACK BODY BOLT
We The People Thrillseeker BMX 20'' Red XL CheckoutSpec= Blac If you have a BB30FRAME: WETHEPEOPLE "THRILLSEEKER" frame, 1020 hi ten FORK: SALT AM 20 fork, 1020 hi ten , 4130 crmo steerer, 26mm offset BARS: SALT "THRILLSEEKER" bar, 1020 hi ten STEM: SALT AM topload stem, 45mm reach HEADSET: SALT PRO int. headset, sealed bearing CRANKS: SALT ROOKIE tubular 3pc crank, crmo, 165mm, 8 spline DRIVER: 1pc cassette driver, 9t, loose ball bearing FRONT HUB: SALT "THRILLSEEKER" hub, alloy, loose ball, 3 8"s axle, 36h REAR HUB: SALT