The e*thirteen Helix R 107BCD Chainring in black is a game - changer for gravel and road cyclists. Designed for 4 - bolt 107BCD cranks such as SRAM Red or Force, even those with power meters, it offers a significant performance upgrade. The 40 - tooth ring pairs perfectly with e*thirteen’s cassettes, giving you a wider range and higher top speeds. Crafted from durable premium 7075 alloy, it's CNC - sculpted for an outstanding stiffness - to - weight ratio. This chainring is compatible with both SRAM and Shimano 11 and 12 - speed drivetrains. The chainline is set by the SRAM® Crank assembly. Key features include compatibility with 4 - bolt 107 BCD SRAM® cranks and Quarq® power meter cranks. Its M4 narrow - wide tooth profile ensures great chain compatibility with Shimano and SRAM 11/12 - speed chains (including flattop chains), excellent chain retention, and less wear. With a 4.8mm offset, the chainline is determined by the SRAM® Crank assembly (45mm for normal width cranks, 47.5mm for wide cranks). Forged from premium 7075 - T7 aluminum and extensively CNC - optimized, it's lightweight and looks great. The durable 7075 - T7 construction guarantees long - lasting wear, stiffness, and strength.
Using this e*thirteen Helix R chainring is straightforward. First, make sure your bike has a 4 - bolt 107 BCD crank like SRAM Red or Force, as it's specifically designed for these. Install it onto your crank following the standard bike part installation procedures. When riding, you'll notice improved performance, especially when paired with e*thirteen’s cassettes. As for maintenance, regularly clean the chainring with a mild bike cleaner and a soft brush to remove dirt and grime. Check the chain regularly for wear and replace it if needed to prevent excessive wear on the chainring. Also, keep an eye on the chainline, which is set by the SRAM® Crank assembly. If you experience any issues like chain skipping, check the alignment and the tooth profile for any signs of damage. With proper care, this chainring will serve you well for a long time.
