PickGuideGuyker GM85 Tremolo Tailpiece Review: Upgraded TM85 for LP & SG Guitars at $94.49
Replacing or upgrading a Tune-O-Matic style stop tailpiece is one of the most direct hardware changes you can make on an LP or SG-style guitar. The Guyker GM85 — marketed as the Upgraded TM85 — is a direct-replacement tremolo tailpiece built from alloy with M8 stud fitment and 51.70mm string spacing. At $94.49 for Chrome (up to $115.49 for Black with Gold), it comes in four finishes and holds a 4.2/5 from 58 on-site reviews. We checked the full spec sheet.
The GM85 is Guyker's renamed and updated TM85 tremolo tailpiece, designed as a drop-in upgrade for LP and SG style electric guitars using the standard Tune-O-Matic hardware layout. The body is alloy with a 51.70mm string spacing — matching Gibson-spec dimensions — on M8 studs with an 82mm post spacing. Overall dimensions are 101.44mm length × 55.72mm width × 29mm height. It comes in Chrome ($94.49), Black ($104.99), Gold ($110.49), and Black with Gold ($115.49). The 4.2/5 rating from 58 on-site reviews reflects consistent feedback on fit and finish; Guyker's Trustpilot sits at 4.2/5 from 129 reviews with 73% five-star scores, which is a meaningful sample size. Guyker backs purchases with their standard 1-year warranty.
Pros
- Gibson-spec dimensions: 51.70mm string spacing and 82mm post spacing for genuine drop-in fit on LP and SG style guitars
- Four finish options (Chrome, Black, Gold, Black-Gold) at consistent spec — no compromises between colorways
- M8 stud sizing is the standard for Tune-O-Matic layouts — no adapter hardware needed for most LP and SG replacements
- Guyker's 4.2/5 Trustpilot from 129 reviews is a meaningful sample — well above the average for guitar hardware brands at this price
- Alloy construction at a hardware upgrade price point — this is a genuine replacement part, not decorative
Cons
- Price varies by finish: Chrome at $94.49 to Black-Gold at $115.49 — check your preferred colorway before comparing to alternatives
- Alloy construction rather than steel — functionally adequate for most players, but worth noting for those specifically seeking a steel tailpiece
- Tremolo-style tailpiece has more pivot points than a fixed stop bar — slightly more to set up correctly on initial installation
- No saddle assembly included — this is the tailpiece only; ensure your bridge saddle is compatible separately
Who It's For
Good For
- LP and SG owners doing a hardware refresh who want a Gibson-spec drop-in without sourcing from boutique suppliers
- Guitar builders and repair techs who need a reliable, correctly-dimensioned Tune-O-Matic tailpiece at a practical price
- Players who want finish options beyond chrome and don't want to pay premium prices for a Gold or Black variant
Verdict
The Guyker GM85 turns a fixed-bridge LP or SG into a tremolo guitar without body routing — solid alloy construction, M8 stud mounting and 51.70mm spacing make it a clean, reversible upgrade at $94.49.