The Race Face Aeffect R Stem is a zero-rise cockpit option designed for aggressive Trail, All-Mountain (AM), and Enduro riding. Configured with a 35 mm handlebar clamp, a 50 mm length, and a black finish, this stem offers a balanced and traditional cockpit layout. It ensures excellent front-tire traction on technical climbs while maintaining predictable and stable steering on high-speed downhill singletrack.

Key Features:

• Length: 50 mm (provides a balanced trail sweet-spot for optimal weight distribution).
• Handlebar Clamp Diameter: 35 mm (designed specifically for high-leverage oversized bars).
• Rise Angle: 0 degrees (ensures a low, aggressive modern stance).
• Stack Height: 38 mm (on the fork steerer tube).
• Steerer Tube Diameter: 1 1/8 inches (compatible with standard threadless MTB fork steerers).
• Material Architecture: 3D forged 6061 aluminum alloy with precise CNC machining for durability.
• Weight Profile: Exactly 160 grams.
• Application Rating: Suitable for Down-Country, Trail, All-Mountain, Enduro, and high-torque eMTBs.

Core Mechanism & Design Features:

• Overbite Faceplate Interface:
  Features Race Face's Overbite faceplate design, which creates a "bulldog-like" interlocking closure. This ensures even distribution of clamping stress away from the bolts and into the solid aluminum body, making it safe for use with lightweight carbon or alloy handlebars.
• eMTB Structural Rating:
  Specifically forged and reinforced to withstand the intense torque, weight, and trail abuse associated with full-power electric mountain bikes.
• Crash-Replacement Warranty:
  Fully backed by the Race Face Lifetime Warranty program, covering operational trail damage and crashes for peace of mind.

This 50 mm length version is particularly popular among trail riders seeking a traditional and balanced cockpit setup, offering optimal performance for both climbing and descending. It’s a robust and reliable choice for riders who demand high performance across a variety of terrains.