CeramicSpeed 61903 Coated Bearing - (6903) Coated Bearing Race Color-Navy Blue Ring Position/Type Chain Retaining Single

Ring Position/Type Chain Retaining Single Ring Tooth Count 30 Round or Oval Round Drivetrain Speeds 9 Drivetrain Speeds 10 Drivetrain Speeds 11 Drivetrain Speeds 12 Offset 3 Chainline/Hub Compatibility 135/142 MTB Hubs Chainline/Hub Compatibility 170/177 Hubs Chainline/Hub Compatibility 190/197 Hubs Chainline/Hub Compatibility 150/157 DH Hubs Chainline/Hub Compatibility 157 Super Boost Hubs Chainline/Hub Compatibility 141/148 Boost Hubs Material Aluminum Defined Color Green Direct Mount Type Direct Mount CINCH

6 Bearing Grade Stainless Steel Lower Cup 56mm Primary Color Red S

The aluminum BMC Trackmachine AL ONE is a complete track bike for all reasons

Narrow-wide chainring with 28 teeth in the front

CeramicSpeed 61903 Coated Bearing - (6903) Coated Bearing Race Color-Navy Blue Ring Position/Type Chain Retaining SingleCeramicSpeed cartridge bearings with coated race are a premium upgrade option that provide extremely low friction improved power transfer and a service life that far exceeds traditional steel bearings. These bearings feature coated races that provide the ultimate performance and longevity. Grade 3 Silicon Nitride balls The coated bearing races increase the bearing service life by providing extreme hardness to the race and reducing corrosion Reinforced