Shimano at Interbike 2010

Shimano's new Dyna-Sys drivetrain system was announced at Sea Otter this year, where they were showing their XT and SLX groups. At Interbike, Shimano was showing their flagship XTR group, which includes the Dyna-Sys drivetrain, and totally redesigned hydraulic brake system. The XTR group is broken up into two categories, the Race and Trail. The new XTR crankset will have two versions, the Trail FC-M980, which has double 39/24 or triple 43/42/24 options, and the Race FC-M985, which is only double, with 40/28, 42/30 or 44/30 options. The three piece spider 10 speed cassette comes in 11/36 and 11/34 combination's, with the largest 5 made from titanium. The directional chain was specifically designed for mountain biking, and the inner and outer plates are asymmetric for better front and rear shifting.

The new XTR Rapidfire Plus shifter has a small converter on the front shifter for either double or triple cranksets. The shifters can be combined directly with the brakes with the I-Spec clamp or in the usual traditional clamp.

The shifters paddles have small dimples on them for better finger feel and adhesion. They use their Vivid indexing for a more defined click, with quick linear shifting.

The front derailer comes in three versions, E-type, top swing and conventional, and it uses an adapter clamp so it will fit all the seat tube sizes. The rear derailer is a low profile Shadow, and has an outer carbon and inner aluminum pulley plate, and comes in a medium or long cage. The main spring tension has been altered to give the same shift effort in all the gears, and it uses a top-normal spring set up.

The totally redesigned XTR brakes are incredibly innovative, and come in either race and trail version. The Race version has a shorter lever, an integrated barrel and reservoir, a split clamp, non slip dimples on the lever face, and uses alloy backed resin pads. The Trail version uses the same barrel and reservoir, but has longer levers, a short stroke Servo-Wave mechanism, and metallic pads with a finned radiator plate (I.C.E).

The brakes use the trick I.C.E rotors, which feature a three layer construction, which uses an aluminum core and an outer steel facing for better heat dissipation. The forged calipers are oversized, and use ceramic piston's, which helps absorb the heat from the oil, and dissipate it outwards. Pads are available resin with aluminum backing, metallic with titanium, and metallic with I.C.E. (finned).

The pedals come in a Race and Trail version. They are oval shaped, have greatly increased shoe and pedal contact area, use a wider bearing placement, and are lighter (Race). The Trail gets a platform uses a resin outer body, and offers increased shoe and pedal contact, pedal protection and more stability.