Ritchey WCS Carbon Matrix C220 Stem - 130mm 31.8 Clamp -6 1 1/8" Carbon BLK MPFN-LIG611 }SRAM Flat Mount Disc Caliper

}SRAM Flat Mount Disc Caliper Bracket Bolts 17mm Titanium

}Surly Single Cassette Cog 3/32" Splined 22t

It adjusts to accommodate hub widths from 120mm–145mm and allows you to align the centerline of the trailer on the centerline of the bike

Flat Protection Thorn Resistant ISO Diameter 406 / 20" BMX ISO Width (mm) 32 ISO Width (mm) 33 ISO Width (mm) 34 ISO Width (mm) 35 ISO Width (mm) 36 ISO Width (mm) 37 ISO Width (mm) 38 ISO Width (mm) 39 ISO Width (mm) 40 ISO Width (mm) 41 ISO Width (mm) 42 ISO Width (mm) 43 ISO Width (mm) 44 ISO Width (mm) 45 ISO Width (mm) 46 ISO Width (mm) 47 ISO Width (mm) 48 ISO Width (mm) 49 Labeled Size 20 x 1

FULL PIN technology uses ten lightweight stamped steel cogs and one 42t aluminum cog held together with 123 high-strength stainless steel pins

Ritchey WCS Carbon Matrix C220 Stem - 130mm 31.8 Clamp -6 1 1/8" Carbon BLK MPFN-LIG611 }SRAM Flat Mount Disc CaliperRitchey WCS Carbon Matrix C220 Stem 130mm 31. 8 Clamp 6 1 1 8" Carbon Black. With the Ritchey WCS Carbon Matrix C220 Stem you really can have it all. Easy to install and remove thanks to a press fit handlebar clamp interface and forward facing hardware. The C220 handlebar clamp design creates a more secure interface by wrapping a full 220 degrees over the handlebar. Bolt forces are aligned with the clamp so that the stem body embraces the handlebar