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What's the I-Spec technology for:
By creating the I-Spec clamps, Shinano not only eliminated the clamp, but also brought a gain in ergonomy with controls closer to the fingers and easier to handle. There are several versions of the I-spec technology: A, B, II and EV
The latest evolution of the Shimano standard, I-spec EV provides greater flexibility in lever positioning to stay focused on riding.
The I-Spec EV components are only compatible between themselves.
This standard brings additional stiffness to the set by adding a point of contact between the end of the lever and the handlebar
The new Shimano seatpost control is I-Spec EV compatible which allows for a more ergonomic positioning similar to that of the shifters

The standard I-Spec II has a half shell that fits inside the brake collar (which is therefore clamped to the handlebars by the brake collar) on which the speed control is attached.
The I-Spec II components are only compatible between themselves.
How to differentiate:
I-Spec A : First generation, it is characterized by a threaded attachment with a small hook.
I-Spec B : It is a shorter threaded fastener without a hook unlike the first version.
An I-Spec A compatible brake can be used with an I-Spec A and B shifter, but an I-Spec B brake can only be compatible with an I-Spec B shifter.
The new XTR M9100 series offers the most versatile group for cross-country, enduro and marathon competition . Designed to meet the needs of mountain biking competition at the highest level with exceptional experience and performance.
The Shimano XTR 9100 speed control adopts an innovative design with new, more ergonomic levers and an anti-slip system for better grip.
See all products fromShimano
| Groupset | Shimano XTR |
| Speed | 12 |
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