This groupset allows for flat mount, hydraulic disc brake ready bikes to take advantage of SRAM’s legendary hydraulic braking system, which integrates seamlessly into the RED Etap shift levers. Of course, with the development of hydraulic disc brakes, SRAM RED Etap had to take the next step. An extra 50 grams for easier hill climbs and greater accuracy than short-cage eTap, and definitely a weight and performance advantage compared to a triple chainring? It’s a no-brainer. The rear derailleur comes in at a stunning 243 grams with the battery, which is just 4 grams heavier than the short-cage eTap, whilst the entire system with 11-32 cassette and a few extra chain links is only an extra 50 grams in total. SRAM RED’s entire ideology is faster shifting with more precise and reliable changes and SRAM boasts that adding larger cogs to the cassette will not just cut down on weight but improve reliability, over moving onto a triple when you're looking for a wider gear range. This provides the rider with a wider range of lower gears - ideal for higher cadences and easier hill climbing than a traditional 2x drivetrain. The difference between standard SRAM RED eTap and WiFLi is the 2x drivetrain capability with a wide-range cassette, allowing for a rear derailleur with a 32-tooth cog, whilst the short cage eTap rear derailleur maxes out with a 28-tooth cog. This system uses incredibly secure 128-bit encryption, similar to the one used by cash point machines, so security is not an issue. The system connects via SRAM proprietary AIREA wireless protocol. With well over 500,000 miles of testing, including multiple Grand Tours, eTap is ready for the road. It’s constructed using the same incredible technology as all other Red Etap systems, but its hydraulic disc brake system allows for impressive braking in every situation, ensuring you finish the descent without worry. The SRAM RED eTap HRD Flat Mount WiFLi Groupset is the next step in both shifting and braking performance, reliability and speed. SRAM RED eTap HRD Flat Mount WiFLi Groupset
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