RockShox Linear XL Air Can Upgrade Kit - 57.5 - 65 mm Deluxe C1+ / Super Deluxe C1+ CheckoutSpec= 100-27 The locking mechanism is nearly

The locking mechanism is nearly twice as wide as the existing  NNN system

It is made here in Minnesota

Any of those cranksets with a removable spider also use the 8-bolt mount

Weight per pair:     2250 g / 5 lbs

RockShox Linear XL Air Can Upgrade Kit - 57.5 - 65 mm Deluxe C1+ / Super Deluxe C1+ CheckoutSpec= 100-27 The locking mechanism is nearlyIncreases positive air volume, providing a more supple feel at the top of the travel Provides capacity for eight Bottomless Tokens (four in the eyelet and four on the air sleeve) Includes air can, volume spacers, seals, grease, oil, and decals TECH SPECS model 57. 5 65mm, Deluxe C1+ Super Deluxe C1+ description linear XL air can upgrade kit