R660AS Antisurge / T51R RED Ball Bearing Turbo Kit for FK8 - Gloss Carbon Fiber

Unleash unmatched performance with the RV6 R660AS Ball Bearing Turbocharger, engineered for serious Honda enthusiasts running the Civic Type R FK8, FL5, or Integra Type S (DE5). After nearly two years of R&D and three full redesigns, this turbo features an anti-surge T51R mod compressor cover and an ultra-lightweight carbon fiber 82mm inlet pipe, delivering aggressive sound, quicker spool, and improved airflow for high-horsepower street or track builds.

This turbo is built around an oversized TD05 bearing housing—nearly double the size of a TD04—and equipped with dual 8mm ceramic ball bearings for durability and fast response. An A/R 0.81 turbine housing reduces backpressure, increases top-end power, and improves thermal efficiency.

The forged billet compressor wheel is FEA-optimized and point-milled for strength and flow. The MAR-M super alloy turbine wheel and shaft handle extreme heat and stress, making this turbo ideal for demanding setups. Oversized -10AN coolant lines and enhanced internal passages ensure optimal heat dissipation.

Note: Requires RV6 inlet pipe and PRL race/big bore MAF housing. Compatible with FK8/FL5/DE5 wastegate actuator.

Special Order Item – Ships upon confirmation.

ETA - DECEMBER 2026

Key Features

• T51R anti-surge mod with 76mm compressor inlet
• Carbon fiber 82mm inlet pipe
• Oversized TD05 bearing housing & coolant passages
• MAR-M super alloy turbine wheel for extreme durability
• Dual ceramic 8mm ball bearings for quick spool
• A/R 0.81 turbine housing for reduced backpressure
• FEA-optimized billet compressor wheel
• Direct drop-in fitment for Honda Civic Type R FK8/FL5, Integra Type S DE5

What's Included

• R660AS Turbocharger
• 82mm carbon fiber inlet pipe
• 76mm compressor cover elbow
• Coupler for PRL race/big bore MAF
• Mounting hardware & gaskets
• Titanium M10x1.25 stud set (4) with safety wire
• RV6 bypass valve

Specifications

Compressor:

• Inducer: 54mm
• Exducer: 67mm

Turbine:

• Inducer: 54mm
• Exducer: 49mm
• A/R: 0.81

Requirements

• RV6 Inlet Pipe (included)
• PRL Race/Big Bore MAF Housing
• FK8/FL5/DE5 Wastegate Actuator (not included)

Warranty

1-Year Limited Warranty – See warranty page for details.