Shimano 105 ST-5800 STI Levers
The 105 ST-5800 11-speed mechanical Dual control levers represent a considerable leap forward over the 5700 levers with many of the same improvement borrowed from Shimano's efforts which created the amazing Dura-Ace 9000/Ultegra 6800 groups. Shimano has been hard at work to reduce both lever throw and friction. Shifting effort has also been made more equal across the entire cassette. Less shifting force is required reducing the process of changing gears almost to the sub-conscience level with smaller, lower input hand movements for a simply wonderful shifting quality.
Changes over 5700 are significant. Lever stroke is and shifting effort required is reduced considerably over the previous generation. Shifting effort for the rear derailleur is reduced thanks in part to new pivots and cable clamp positioning on the RD-5800 rear derailleur. Front shifting on the 5700 could sometimes be a hair on the sticky side and Shimano addressed this by making the 5800 lighter, quicker and dramatically reducing friction with new shifter cables coated with an improved polymer that glides through the liner with less drag and holds grease very well. This combined with more leverage in the front derailleur produces front shifts so fast they have to be experienced to be believed.
Ergonomics have evolved with new levers and hood shapes. The carbon blades flairs slightly more outward and are a bit more sleek. Activating the levers from the drops or hoods is a little more friendly and there is a new screw type 10mm of reach adjustment to fit all hand sizes for a tuned fit. Overall, the size of the body is a little smaller volume, similar to Di2 levers, and the hoods have a dual rubber compound to top off the improve creature comforts.
- 486 grams
- 10mm screw type reach adjustment
- Fast and accurate shifts with a shorter stroke and lighter action
- Improved ergonomics in blades and body
- 11-speed design
- More equal shifting effort through the range
- Includes a complete set of polymer-coated cables and housing
For 11-speed mechanical systems only.