Ron Thorn Brass Knuckle II 12" Radius/Polished For Offset Guitars

The Brass Knuckle II is finally here - a drop-in replacement bridge for Jazzmaster, Jaguar, and Mustang guitars with vintage-style “thimble” mounts.

Based on Thorn’s original one-piece Tele Brass Knuckle saddle, the BK2 features a single brass saddle with compensated slots for rock-solid intonation, improved stability, and excellent tone. The solid brass saddle pairs with a chrome-plated steel base plate for a vibration-free, no-nonsense assembly - no springs, no rattle, no hassle.

Installation is simple: pull the strings, lift your old bridge, drop in the BK2, restring, and dial in action and intonation. No drilling or swapping thimbles required.

With deep string slots and precisely calculated compensation, the BK2 keeps strings secure - even under heavy strumming or Bigsby use - and works perfectly with standard string gauges (9–42, 10–46, 11–49 with plain G). Specs:

Drop-in bridge for Fender & aftermarket bodies w/ vintage-style thimbles (2-7/8" centers)

One-piece brass saddle w/ compensated slots

Fits 12" radius or 7-1/4" to 9-1/2" compound radius fretboards

2-1/16" string spacing

Right-handed only

Includes allen wrench & instructions