A quick visual inspection at the Shimano SLX crankset indicates a two-by version on the left using a different spider design than the triple crankset pictured to the right. And the use of Torx chainring bolts indicates that they may be made of aluminum.
Shimano SLX Walk-through for 2013
Shimano has not given any weight figures yet, although the rumor is that the SLX is just a bit heavier than XT, which seems obvious. The great news is that Shimano has designed these specifically to survive the abuse of aggressive trail riding, this means the groupset will insert into mountain bikes with travel in the five or six-inch range which is where most mountain bike riders are moving towards.
Shimano M670 10 speed Crankset
First up in the groupset is the bold shape of the crankarms is a welcome sight for strength, for getting used on everyday mountain bikes. And even better yet are the gearing options. It has new school options of 24,32,42 as a (3×10 triple), and three choices for the (double 2×10) chainring – 40 x 28, 38 x 26 and the new, 38 x 24 gearing that’s going to pair better with 29er bikes. The rings have stamped and pinned ramps with the fast shift action that comes from most Shimano cranksets. Similar to XT, the SLX arms are built separate from the aluminum four arm spider.
- Price: $233.00 (was $259.99)
29er Mountain Bike Technology
Shimano has missed the boat on 29er bikes two times now. The first when they unveiled the recent XTR and a two years ago with the new XT groups. The new SLX group incorporates a low-profile front derailleur making room for 29er mountain bike tires, a smaller 38 x 24-tooth gearing choice for the two-by crankset, and a direct mount rear derailleur that will adapt well to 12-millimeter through-axles that most designers for 29er bikes are using in the rear of these frames to increase stiffness. The Direct Mount will eliminate the Shadow derailleur’s B2 link and the replaceable derailleur hanger with one piece, and can be used with both the standard quick-release or a through-axle.
Shift Lever Goodness
They are reporting the new Shimano SLX M670 shift levers have seen big upgrades having the crisper, more positive action of the XTR and XT brothers. The triggers have been redesigned to make ergonomics better and the front shifter can be changed to be used for two or three chainring cranks using a XTR style switch. SLX shift levers come with handlebar clamp or multi mount version.
- Price: $98.00 (was $109.99)
SLX M675 Hydraulic Brakes Also Get Ice Tech Rotors
All Shimano brakes will come stock with the finned pads and the rotors that can possibly dissipate 20-percent of the heat. Rotors come with the splined Shimano Centerlock and a six-bolt version will be available as well. Diameters being 160, 180 and 203 millimeter. The calipers have similar ceramic pistons and one-way bleeding to the XTR. The brake model shown here has a shorty lever and ServoWave action as well.
- Price: $125.99 (was $139.99)
SLX 675 and 678 Hubs
These hubs are built with angular contact bearings and they are very well sealed and you are able to adjust them easily. The Shimano hubs will come with a 15 millimeter through-axle or the standard quick release for the front and a 12-millimeter through axle for its rear hub. They have increased the engagement points in the freehub so riders will enjoy instant acceleration.
- Price: front $35.00 (was $39.99)
- Price: rear $53.00 (was $58.99)
There are two new rims, both UST. Shimano builds it wheels by hand, which is quite the sight to see. The MT66 rim is a cross-country profile that is made in the 29er and 26-inch diameters. MT66 wheels have option for a rear quick release and 142/12 through-axle option. And the front hub is made with 15QR through-axle only. Shimano’s 29er mountain bike wheels use 28 spokes in the rear and 24 in the front to balance the strength requirements of the larger twenty niner rims. The straight-pull hub and wheel style allows for a higher spoke tension and the wheels lasting longer.
Claimed Weight for the MT66 29er bikes wheelset are said to be 945 grams front 15mm and 1080 grams rear with quick release. The dates for release are July for the MT66 wheels. Prices have not been released yet, but Shimano claims the wheels will be in this price range for retail.