These are required if your frame or fork has an IS mount and to fit your caliper and/or adjust your rotor size

it's a must have for any home mechanic

Three-Point Fit: Comfort and performance that holds lenses in precise optical alignment

Silicone stopper

Dissector or Minion Semi Slick on the back

Fox Defend Race Pants - S-30 - Midnight PDP|PLP|Suits Freehub Type These are required if yourThe Fox Defend Pants have the durability, comfort and storage potential you need for long days on the bike. The pants are slim fitting, yet kneepad friendly, and feature a tapered lower leg with a stretch mesh insert to help reduce snagging and drag. Cordura fabric at the seat and knee panels provides higher resistance to abrasion, and a durable water resistant finish helps to shed water, mud and dirt. Laser perforated sections in the front and back