SRAM brand is an experienced American manufacturer of MTB bike accessories and drivetrains. It was founded in 1987 in Chicago. The most popular products are the following drivetrain components: cranks, derailleurs, chains and cassette sprockets. SRAM uses many unique solutions. The most appreciated are the rotary grip-shift manoeuvres, which are the fastest way to change gears.

The Sram X4 rear bicycle derailleur is characterized by its aesthetic finish and high quality performance. The use of Direct Route technology optimizes the precision of the Sram X4 rear derailleur.

• Manufacturer: Sram
• Model: X4
• Material: Aluminum, steel
• Designed for drivetrains: 3x9, 3x8 or 3x7
• Technology: Direct Route
• Derailleur Carriage: Long
• Supported largest cassette crown: 32z
• Mounting: Bolt made of AL 7075, for 6mm allen
• Color: Black
• Weight: 280g (weight of the version with the long carriage)
• Manufacturer code: 00.7515.033.000
• Product supplied in replacement packaging (OEM)

Direct Route
A rear derailleur design and associated method of routing the cable to the derailleur. In this system, the cable runs through an arm protruding from the rear of the derailleur, making the armor running to the derailleur straight rather than curved. This makes the derailleur less prone to fouling the last section of the armor. Di.R.T. was introduced to the bicycle world in 1996 by the German company Sachs acquired a year later by the American company SRAM, which uses the system in its current derailleurs.