BLCYANUE 11.5" Rear Brake Rotor for Harley-Davidson Sportster Touring Dyna — Mirror-Polished 420 Stainless, Improved Cooling

BLCYANUE 11.5" rear brake rotor is a mirror-polished stainless steel replacement designed to restore braking performance on compatible Harley-Davidson Sportster, Touring, Dyna, Early Super Glide and Softail models.

This rotor is engineered to match factory fitment while improving heat dispersion and resisting corrosion. With a full-sweep vane pattern, hollowed sections for reduced mass, and a precision-ground face, the rotor targets consistent wet and dry stopping feel and lower propensity for vibration. It ships ready for installation using 3/8-16 x 3/4" screws and is made from high-polish 420 stainless steel with protective paint at the cut holes.

Which Harley-Davidson models will this 11.5" rotor fit?

This rotor covers a broad range of Harley models spanning multiple years. Confirm bolt pattern and rotor diameter on your bike before ordering to ensure proper fit and rotor centerline alignment.

• Sportster models: 1984–2010
• Touring models: 2000–2007
• Dyna models: 1992–2017
• Early Super Glide: 1984–1991; Softail models: 1984–2017 (various years)

How does this rotor manage heat and reduce weight?

The rotor uses a full-sweep vane pattern and hollowed sections to speed airflow through the rotor body, assisting faster cooling under repeated braking. Reduced rotating mass improves thermal response and contributes to steadier braking performance over long rides.

• Full-sweep vane pattern for consistent air exchange
• Hollow design lowers rotating weight and improves cooling
• Mirror-polished faces help shed grime and resist surface oxidation

Will this rotor lower vibration and last longer than stock parts?

BLCYANUE rotors are precision ground to maximize flatness and minimize runout, which reduces pedal or lever pulsation that riders feel as vibration. The rotor steel receives heat treatment and thicker chrome content in the finishing stages for improved wear resistance compared with untreated alternatives.

• Precision-ground braking surface for improved flatness
• Hardened material and controlled finishing for better wear characteristics
• Black-painted cut holes to guard against rust at vulnerable edges

What should I check before buying and installing this rotor?

Measure your current rotor diameter and verify the bolt pattern on your wheel hub to match the 11.5" size and mounting holes. The package is compatible with 3/8-16 x 3/4" installation screws; always tighten to manufacturer torque specs and inspect brake pads and calipers during replacement.

• Confirm 11.5" rotor diameter and hub bolt pattern
• Use 3/8-16 x 3/4" mounting screws supplied or specified
• Inspect pads, caliper alignment, and torque to factory specs

Who is this for: This BLCYANUE 11.5" rear brake rotor is aimed at Harley-Davidson owners and mechanics who need a durable, OEM-compatible replacement to improve heat dissipation and reduce vibration. It’s suitable for riders restoring older machines, upgrading worn rotors for better durability, or anyone seeking a high-polish stainless steel option that resists corrosion and maintains a clean appearance on showroom or daily-use bikes.