Rotor finally released the oval QX1 MTB ring and a completely new line of single, double and triple specific REX MTB cranks. We have been hoping for this day to come for quite some time now. Our very own “Ask a Mechanic” mechanic, Daniel Slusser, even questioned Rotor at Interbike last year, wondering why they hadn’t released an oval 1x specific mountain chain ring yet. If you are a mountain rider looking to take advantage of the improved performance that Q-Rings offer, l am happy to say the wait is over. Daniel is very happy. Now I know it seems like Rotor focused most of their energy on the mountain side this year but they also improved and redesigned their 3D line of road cranks to keep the roadies happy as well. Click away to see the details.
Rotor’s new mountain bike crank line is broken up into three levels; REX 1, REX 2 and REX 3. The REX 1 is available in a single ring (REX 1.1) and a double ring (REX 1.2). It is the lightest of the three levels at 489 grams, built with 7055 alloy for the perfect balance between light weight and stiffness. It is available in BCD (Bolt Circle Diameter) 76 and BCD 110/60 plus BCD 110/60 with a Micro Adjust Spider for even more adjustability. The REX 2 is CNC machined and can be run with one or two rings as well. It features a 30mm axle and comes in BCD 76 and 110/60. The REX 3 rounds out Rotor’s mountain crank line and draws on the famous 3D crank technology for maximum compatibility. This entry level crank can be run with double or triple ring set ups with a BCD of 110/60 or 104/64.
For ultimate in single ring performance, throw the new Rotor QX1 oval mountain ring on your REX 1 cranks. You’ll be using the same chain ring set up that led Christoph Sauser to victory at the Cross Country Marathon World Championships. Heck if I can’t have his legs, I’ll settle for his bike parts. The QX1 has an ovality of 12.5% to help the you accelerate better, feel less muscle fatigue and experience smoother torque and better grip off road. The alternating think/thin tooth profile keeps your chain from dropping in even the worst conditions, eliminating the need for a chain guide. It is compatible with Rotor Rex 1.1 and Rex 2.1, SRAM XX1 and Specialized cranks thanks to crank specific spiders from Rotor. It features a BCD of 76 and is available in 28, 30, 32, 34 and 36 teeth.
If you’re aching for an oval ring but haven’t worked up the courage to run a single ring yet, Rotor has also released the QX2 for doubles and QX3 for triples in a 10% ovality. The QX2 is available in BCD 110/60, 104/64 and 120/80 while the QX3 comes in BCD 104/64. They also have a 32 tooth noQ ring in BCD 76 for those too chicken to go oval.
Tentative Pricing Details: REX 1.1 ($500); REX 1.2 ($550); QX1 chainring ($125); QX2 chainrings ($250); QX3 triple sets ($290)
The release date is still uncertain but check for updates in the coming months.
Alright roadies it’s finally your turn. Rotor redesigned their crank line and added the new 3D+ crank to the line up. The 3D+ is the lightest road crank from Rotor and is made from 7055 alloy. This new alloy reduces weight without sacrificing rigidity. The 3D30 crank is CNC machined and forged. Both are created using Rotor’s Trinity Drilling System and use a 30mm axle with UBB30 for compatibility with most frames. The 3D24 crank is still the benchmark of Rotor’s line but with increased stiffness and lighter weight for 2014. The 3D+ is available in BCD 110 and 130, the 3D30 is available in BCD 110 and the 3D24 is available in BCD 110, 130 and 144 for the track.
Q-rings have been proven to increase overall performance whether you ride road or mountain. With Rotor’s expanded chain ring and crank offerings for 2014, there is nothing stopping you from gaining an advantage over the rest of the field.