SPEC SB55S-2 Steel Flywheel for 11-17 BMW 335i/435i/535i N55

Vehicle Fitment

• 2011 BMW 1M Coupe (N54/N55 3.0L)
• 2011-2012 BMW 135i (N55 3.0L)
• 2011-2017 BMW 335i (E9X/F30, N55 3.0L)
• 2013-2017 BMW 435i (F32, N55 3.0L)
• 2011-2017 BMW 535i (F10, N55 3.0L)
• 2012-2016 BMW M235i (F22/F23, N55 3.0L)
• 2011-2017 BMW X3 (F25, N55 3.0L)
• 2011-2016 BMW Z4 35i (E89/F25, N55 3.0L)

Features

• High-strength steel single-mass flywheel for performance and durability
• Designed for non-ratcheting SPEC clutch kits
• Precision machined for smooth engagement and reliable balance
• Optimized rotational mass for improved throttle response over OEM dual-mass
• Suitable for spirited street use and moderate performance driving
• Solid construction for consistent clutch engagement
• Ideal upgrade when replacing worn OEM flywheels
• Engineered for compatibility with multiple BMW N55/N54 platforms

Specifications

• Manufacturer Part Number: SB55S-2
• Type: Steel single-mass flywheel
• Material: High-strength steel
• Weight: Approx. 24 lbs (heavier and more durable than aluminum options)
• Engine Compatibility: N55 and select N54 3.0L engines
• Designed for non-ratcheting SPEC clutch kits
• Balance: Precision machined for smooth rotation

Included Components

• 1x SPEC SB55S-2 steel single-mass flywheel

Product Description

The SPEC SB55S-2 Steel Flywheel is a robust single-mass replacement designed for a wide range of BMW 3-Series, 4-Series, 5-Series, and related models from 2011 through 2017 equipped with N55 (and some compatible N54) 3.0-liter engines. Built from high-strength steel and precision machined, this flywheel is optimized to deliver smooth power transfer and improved throttle response compared to the heavier OEM dual-mass unit, making it an excellent choice when performing a clutch service or upgrading to a performance-oriented driveline setup.

Designed specifically for use with non-ratcheting SPEC clutch kits, the SB55S-2 provides reliable engagement and long service life. Its balanced construction and solid mass make it a great option for street performance enthusiasts and those seeking consistent clutch feel without overly aggressive lightweight behavior. Whether replacing a worn flywheel or pairing with a performance clutch kit, this steel single-mass flywheel offers dependable performance across a variety of BMW N55-equipped applications.