If you are looking to upgrade your guitar with better than original parts, then take a look at our guitar parts. Right now we have Grover and Sperzel guitar and bass machine heads, and will be adding more machine head tuners, electric guitar pickup, and other parts very soon.
We have traditional Grover Rotomatic tuning machines, as well as Grover locking tuners, and models with 18:1 gear ratios. The Sperzel Trim-Lok locking guitar machine heads are also here. They work well as replacements for worn out tuners, upgrades to guitars you want to hang on to, and for new guitars you are building. This is a good way to update an older guitar that needs a little help. Installation is usually straight forward and simple; though for some guitars you may need to redrill, enlarge, or clean out old tuner holes. Either way, it's a cost effective way to improve the playability of any steel string guitar.