Ergon's naming convention is pretty straightforward. In this case, the "GS" indicates the shape of the grip. The GS grips are a medium size and shape compared to their racy GX series and their uber-comfy GP series. This GS3 Leichtbau Grip falls right in-between, offering a shape that works to reduce pressure on your Ulnar nerves and to ease wrist strain like the GP1 while retaining the light weight characteristic of the GX1. The "3" in the name refers to the length of the integral bar end. In this case, it's longer than the GS2 bar end and is ample enough to wrap all four fingers around it.We feel like this happy medium will quickly become a favorite for anyone looking to increase their hand comfort on their mountain bike. The wing shaped support is exactly where many glove makers are stitching on extra padding these days, and it provides more support for your hand. You'll perceive less pressure on your palm because of the increased surface area, and the soft kraton rubber gives just enough and allows supreme grip, even with sweat soaked gloves. You'll see a textured rubber insert on the top of the grips. Ergon uses a softer rubber compound here to help dissipate vibration and jolts on the trail.The angle of the grip is important and worth the time to find the position that works best for you. The clamp is integral into the molded GFK Composite bar end and should be tightened to a maximum of 5 Nm in order to avoid handlebar damage once you find the right angle. Both the grip and the bar end are independently adjustable, and indexing marks make it easy to get the two grips to line up identically. Ergon has found that most people, except those who have huge mitts, go with the small size. The smaller diameter is lighter, a bit stiffer, and easy to grab. Those with big hands and those who spend long, long days in the saddle might want to lean towards large.The Ergon GS3 Leichtbau Grip is available in two sizes -- Small and Large. The GS3 is 132mm wide, including the clamp assembly; and it's 54mm front to back at the wing. The set comes with bar plugs and installation instructions.Choosing the correct grip (PDF) Choosing the correct size (PDF) Ergon weight comparison (PDF)
Strengths: These combination grips and bar ends are among the very best I have ever used. I have used other grips with added bar ends made of Al or steel alloys and nothing I used was more comfortable than these one piece units. I tried the smaller version (GS2) and did not care for them since there was less area to rest my hands upon during 2 hr daily rides on a MTB doing road duty. I have the GS3 and the GS2 is the same except the bar end is shorter. In two years of riding, I have logged 14K miles and these grips have held up well and that durability is appreciated. My hands do get fatigued even with gloves after 2 hrs of riding even when rotating positions but if I used something else, they probably would be even more fatigued so Ican't complain. I like the adjustability of the bar ends as well as they can be rotated independently from the grips to give you the most comfortable positions. Once adjusted and set, they are cinched down and stay in place. I have had no problems with it moving or coming loose.
Weaknesses: Very durable but color has faded a bit in two years of constant use. Some of the rubber inserts are coming off but those can probably be glued back on.
These are a little spendy $$ and could be a set at a tad lower price point.
Although they are pricey, they are well worth the expense and I plan to get another set for a second bike which will do cyclocross duty.
I would have given it 5 chili's for value if they were just a tad cheaper but this a minor issue.
Highly recommended for anyone doing long rides on a flat bar bike.