These are commonly referred to as "reducing crown races"

they also offer excellent mileage and decent sidewall protection

Large Specs:

Shop quality

TLD Sprint Jersey - M - Fiery Red Replace Images These are commonly referred toSprint Jersey The Sprint Jersey is ready for the next generation of racers. With a sealed neckline, laser perforation, and signature Troy Lee Designs Air Mesh side ventilation, the Sprint Jersey has become the staple for all privateers on race weekends. At 165gsm, its a durable race option for those taking their riding to the edge and sometimes beyond. Key Features: Sealed neckline for comfort and durability Laser perforated fabric enhances