Blacklabel 309 XC Expert

Race-bred carbon tech with Ringle Super Bubba X hubs and the same profile and MR5 layup, ready for serious privateers and demanding racers.  Key Features • World Cup level XC wheelset that balances precision handling with light weight and the durability to tackle todays technically challenging courses • Only 1375g per wheelset • IDM (Impact Dispersing Matrix) material in both front and rear rim for superior impact strength and industry leading durability • Completely new light weight asymmetric rim design with a 30mm internal TSS channel for speed generating traction and control • Ringle Super Bubba X hubs offer 4 degrees of engagement • Lifetime Warranty  • 30-Day Customer Satisfaction Guarantee Specifications • Outer Rim Width - 35.5mm • Internal Rim Width - 30mm • Rim Depth: 21mm • Rim Material: Carbon Fiber • Rim Construction: Asymmetric profile, TSS channel, MR5 layup •Technology: Impact Dispersing Matrix (IDM) • Rim Size: 29” • Hub: Front Reynolds / Ringle SBX • Spoke Type: