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Win a Sunrace CSMX8 11-46 11 speed cassette and a DLMX30 11 speed rear trigger shifter. Shift it like you mean it, enter to win below.
The Sunrace CSMX8 11-46 11 speed cassette will fit on a standard MTB Shimano freehub body. Weighs 465g. Compatible with SRAM derailleurs and new Shimano XT and SLX rear derailleurs The Sunrace DLMX30 11 speed rear trigger shifter is Shimano compatible and weighs 139g.
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Photos by Justin Steiner
Rival sits above SRAM’s entry level Apex group and below the better-known Force and Red groups. After a painful recall of the first generation hydraulic disc groups, SRAM is back on track and has expanded the hydraulic disc option (and the 11 speeds) to Rival level.
Rival is all about options. Cranks come in 165, 167.5, 170, 172.5, 175 and 177.5 mm lengths, making this a great way to fine tune fit at an affordable price. Chainring options are 52/36, 50/34 and 46/36. Pair those up with a cassette in 11-26, 11-28 or 11-32 for plenty of range, though I was hoping for a 46/34 option for a more off-road oriented adventure bike.
I suppose the 34 be could paired with the 46, but shifting may suffer. The crank is a basic forged design and is far from svelte compared to the hollow-forged or carbon cranks from Force and Red. The cassettes carry the largest three cogs on an aluminum carrier; the rest are individual and may bite into softer aluminum cassette bodies.
The Yaw front derailleur has a built-in chain keeper to prevent derailment to the inside. Yaw derailleurs move at an angle in relation to the chainrings, eliminating the need to trim and giving you access to all 22 gear combos. Once set up properly the front shifting was acceptable, but took awhile to tune out a tendency to shift past the big ring. The rear derailleur is a workhorse, setting up easily and firing off shifts without complaint.
The integrated shift and brake levers are chunky, but comfortable. There are small reach adjust bolts for the brake and shift levers; care must be taken to adjust both properly or the shift lever can hang up on the brake lever. I’ve adapted to SRAM’s DoubleTap single lever shifting, but still find Shimano’s two levers to be more intuitive. While the shifting performs well, the tactile feel at the levers isn’t as precise as I’d like, with a feel of plastic and bushings rather than metal and bearings.
The real stars of the show are the brakes. Much like SRAM’s newly released Guide mountain bike brakes, the Rival discs have an stellar feel at the lever, with excellent modulation building up to very controllable power. The caliper mounting surfaces are nicely machined and the brakes set up easily on the two bikes used for testing. Other than an odd vibration on the rear of one bike that I was never able to track down, the brakes were quiet and fade free, even after some sketchy and fast fire road descents under a bikepacking load.
While electronic shifting gets all the attention lately, personally I think hydro discs are a bigger upgrade to performance than adding batteries and servo motors to shifting. The Rival group is hugely versatile, with enough options to keep everyone except fully-loaded touring cyclists happy with the gear range and fit options. With performance that rivals (HA!) more expensive groups, particularly the brakes, Rival parts are a less expensive replacement option for the high-end groups. For rough and tumble adventure bikes, the Rival group is right at home, particularly for riders used to the power and control of modern mountain bike brakes.
- Hydraulic brakeset and shifters: $384 per wheel
- Front derailleur: $38
- Rear derailleur: $72
- Crankset: $218 BB30/$192 GXP
- Cassette: $69-$76
- Chain: $29
- Centerline rotors: $44-$55
The inevitable march of technology continues, and today SRAM made official one of the worst-kept secrets in the industry, the new wireless drivetrain known as Red eTap. The new shifters and derailleurs work in conjunction with existing SRAM Red cranksets, chains and cassettes. As bicycle frames become more and more complex, the absence of wires or cables allows them to take on even more aggressive forms. Modern wireless technology, battery technology and tiny servo motors all converge in the new system.
To shift to a harder gear, tap the right hand button. To shift to an easier gear, tap the left hand button. To shift the front chainring back and forth, click both buttons at the same time. Up to four extra remote shifters, SRAM calls them Blips, can be positioned anywhere on the handlebars for sprinting or climbing positions. The shift levers themselves have carbon fiber blades and offer reach adjustments for a perfect fit.
Small, removable battery packs on each of the derailleurs are interchangeable and can last a claimed 1,000 kilometers between recharges, which take 45 minutes. The wireless transmissions are encrypted to make it almost impossible for outside interference to influence the system. It uses a proprietary communications protocol and has been tested by the professional peloton for years. Firmware updates can be made with the included USB memory stick.
The SRAM Red eTap group will go on sale in spring 2016 and it won’t be cheap: $2,758 for the full aftermarket setup. It will also be included on several 2016 model bikes from the major brands.
This type of technology is still far beyond the reach of average cyclists, but it’s interesting to how the bicycle continues to evolve with technology, and it might someday be more common than mechanical shifting.Tweet Print