The responsibly light 336-gram hub spins an aluminum hubshell on our proven 19.5mm one-piece constant diameter axle (through the bearings to the dropouts). Our patented RingDrive engagement mechanism has 72 points of contact ensuring nearly instant power transfer while ratcheting through rock gardens, setting up for a drop-off, or pinning the final run-out towards the line. RingDrive is also responsible for that famous King buzz. Who knows, maybe you can take off your bear bell now.*
As with all Chris King hubs, the ISO 150 is completely user serviceable. Bearing preload can be adjusted without removing the wheel using a 2.5 hex- head wrench to fine-tune the adjusting clamp on the non-drive side. Thorough service can be performed on the hub bearings using a 2.5 hex-head wrench and penknife while our Hub Service Tool allows for full hub and driveshell disassembly and reassembly.
King hubs have a reputation for durability and just because this hub takes on severe conditions doesn't move us from our 5-year hub warranty.
All of our rear hubs utilize our patented RingDrive™ engagement mechanism. RingDrive™ uses 72 engagement teeth on each drive ring. That means the hub engages over 3 times quicker than the standard 24 tooth pawl-type freehub. Trying to get started again in the middle of a steep uphill section? Going for the surprise jump to drop your buddies? This unique design offers instant and positive engagement that's capable of handling a torque load of over 800ft/lbs, or over three times more than most other high end hubs we've tested. It is the heart of our hub and all the rest is built around it.
| S = Silver | B = Black | R = Red | Y = Gold |
| G = Green | M = Mango | L = Pewter | C = Brown |
| K = Pink | N = Navy |