Ergon has refreshed two familiar trail-grip designs with the GMA and GMS. The brand’s 23 September announcement introduces replacements for the GA2 and GA3 respectively, giving riders a choice between a conventional grip shape and a compact palm-support wing.
The useful question for an eMTB rider is which shape and diameter fits their hands. These are component updates, not an e-bike-specific requirement, and this is launch coverage rather than a ride review.
GMA: two round-grip diameters
The GMA range uses Ergon’s Gravity Control rubber, with differently shaped surface textures across the hand-contact areas. The regular version measures 32mm in diameter; GMA FAT increases that to 34mm. The clamp includes a positioning scale to help reproduce the chosen angle.
That gives shoppers a clear decision to make before choosing a colour: whether they prefer a smaller or fuller grip. We have not tested the compound’s wet-weather hold or vibration damping.
GMS: a small support wing
The GMS retains the mini-wing approach of the GA3, with nominal 31mm and 33mm diameters for small and large versions. Ergon positions it for trail riding, touring and eMTBs, and says the shaped support is intended to distribute pressure across the hand.
Those comfort benefits remain manufacturer claims. A supportive shape is worth trying in person because the wing’s angle and the rider’s preferred hand position matter as much as the size label.
What to check before buying in the UK
A launch announcement is not confirmation that every colour and size is already on a UK shop shelf. We have not established a reliable UK price and stock combination for this draft, so do not convert the overseas launch price into an assumed British retail price.
Before replacing a working set of grips, compare the actual diameter, check space alongside your brake and assistance controls, and follow the grip and handlebar manufacturers’ fitting instructions. A name change alone is not a reason to upgrade.