Description
The Comp Turbo CT4RX-5858 Triplex Ceramic Ball Bearing Oil-Less Water-Cooled Turbocharger is designed to deliver reliable, high-performance boost with fast response and advanced thermal control. Rated for up to 775 horsepower, this turbocharger eliminates traditional oil lubrication while retaining efficient water cooling, simplifying installation and improving durability under demanding operating conditions.
Built around Comp Turbo’s patented Triplex Ceramic Ball Bearing system, the CT4RX-5858 provides ultra-smooth operation, rapid spool characteristics, and long service life. Its lightweight billet aluminum center section, efficient compressor and turbine wheel combination, and versatile mounting options make it ideal for high-performance street builds and track-focused applications.
Fully rebuildable and upgradeable, the CT4RX-5858 offers long-term serviceability and scalability as performance goals evolve.
Key Features
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Patented Triplex Ceramic Ball Bearing oil-less water-cooled system
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Eliminates traditional oil feed and return lines
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Faster spool and smooth, consistent operation
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Engineered for high-performance street and track use
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Recommended for engine bay, mid-mount, and remote-mount turbo systems
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Lightweight billet aluminum center section
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CTRX Ultra Slim Hub 7+7 compressor wheel
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High-flow 9-bladed turbine wheel
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Standard rotation configuration
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Available with T3 or V-Band turbine inlet housings
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Fully rebuildable and upgradeable design
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Water-cooled bearing housing with 3/8 NPT female inlet and outlet ports
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Integrated maintenance grease fitting
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Supports horizontal and vertical installation
Power & Engine Fitment Specifications
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Minimum horsepower: 400 HP
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Maximum horsepower: 775 HP
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Minimum engine displacement: 2.0 liters
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Maximum engine displacement: 3.5 liters
Compressor Housing Specifications
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Compressor inlet: 4 inches
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Compressor outlet: 2.5 inches
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A/R ratio: 0.70
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Pressure port: 1/8 NPT
Compressor Wheel Specifications
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Compressor inducer: 58 mm
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Compressor major diameter: 81 mm
Turbine Wheel Specifications
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Turbine inducer: 65 mm
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Turbine exducer: 58 mm
Recommended Service Interval
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Normal street use: Apply 8 pumps of grease every 3,000 miles
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Extreme street use: Apply 8 pumps of grease every 1,500 miles
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Extreme drag race use: Apply 8 pumps of grease prior to each race event
Warranty Information
2-Year Comp Turbo Warranty
All Comp Turbo turbochargers are covered by a comprehensive 2-year warranty against defects in materials and workmanship.
Warranty Coverage
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Defects in materials and workmanship
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Repair or replacement of the turbocharger at no additional cost during the warranty period
Warranty Terms
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Warranty is valid for two years from the date of purchase
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Applies to turbochargers used and maintained according to Comp Turbo service and operation guidelines
With Comp Turbo’s 2-year warranty, performance, reliability, and confidence come standard.
To ensure the highest quality, Comp Turbo kits are built to order. Most orders will take 3-5 weeks to ship but some kits can take longer. Once you place your order, the order will not be cancellable for any reason.
