Max 1 Performance
FK8-RC4-450
FK8-RC4-450
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NEXT-LEVEL POWER: MAX1 Turbo Upgrade Lineup for Honda K20C1
Choose Your Weapon: The 450 HP Street Weapon vs. The 550 HP Track Monster
Unlock the true, hidden potential of your Honda 2.0T engine. Whether you are looking for a sharp, responsive street car or a high-flow track beast, the MAX1 Performance K20C1 Bolt-On Turbo Series has the perfect match for your build goals.
Retaining a 100% direct factory bolt-on design, both models deliver motorsport-grade reliability with zero custom fabrication required.
Compare Our Models & Choose Your Power Target
Use the guide below to find the perfect turbocharger for your driving style and supporting modifications:
Option 1: MAX1 FK8-RC4-450 (The Precision Street Weapon)
Target Output: Up to 450 HP
Best For: Daily drivers, canyon carvers, and weekend track day enthusiasts looking for a perfect balance.
The Experience: Drastically reduces turbo lag compared to stock, offering instant transient throttle response and a broad, meatier powerband.
Supporting Mods Needed: Standard bolt-ons (Upgraded intake, intercooler, downpipe) and a standard ECU tune. [1, 2]
Option 2: MAX1 FK8-RC4-550 (The Ultimate High-Flow Monster)
Target Output: Up to 550 HP
Best For: Serious racers, drag strip competitors, and high-horsepower chasers who demand absolute top-end dominance.
The Experience: Features an enlarged, high-capacity CNC billet wheel designed to move massive volumes of air at high boost pressures, offering relentless top-end pull that never stops.
Supporting Mods Needed: Advanced modifications required. Must upgrade fuel system (HPFP, larger injectors, flex-fuel/E85 setup) along with high-flow breathing mods and advanced custom tuning.
MAX1 Performance Upgrade Turbocharger | Honda K20C1 Platform
Model: FK8-RC4-450
Dominate with 450+ HP: The Ultimate High-Flow Weapon for Honda K20C1
Unlock the true, hidden potential of your Honda 2.0T engine. The MAX1 FK8-RC4-450 is our premier high-flow upgrade turbocharger, engineered specifically for drivers chasing serious power numbers without sacrificing the convenience of a bolt-on setup. Designed to support up to 450 Horsepower, this unit delivers relentless top-end pull and massive airflow for absolute street and track dominance.
Product Features & Benefits
Heavy-Duty Dual Ball Bearing System
Built to handle the immense pressure of a 450 HP setup. The premium dual ball bearing system minimizes high-boost friction, delivers incredibly fast transient throttle response, and provides motorsport-grade durability under extreme thermal stress.
Maximum-Flow Billet Compressor Wheel
Features an enlarged, aggressively engineered billet compressor wheel optimized for high-volume airflow. CNC-machined from high-strength aerospace-grade aluminum to eliminate flex and maintain peak efficiency at high boost pressures.
True Direct Bolt-On Design
Massive power, zero custom fabrication. Despite its massive flow capabilities, this turbo is engineered as a 100% direct factory replacement that retains your original mounting positions, stock water/oil lines, and downpipe location.
Vehicle Compatibility
Engineered specifically for high-output builds on the Honda 2.0L VTEC Turbo (K20C1) powerplant. Perfectly fits:
Honda Civic Type-R — FK2 / FK8 (2017+) / FL5 (2023+)
Honda Accord — CV2 2.0T (2018+)
Acura RDX — 2.0T (2019+)
Technical Specifications
| Parameter | Specification |
|---|---|
| Target Power Output |
Up to 450 HP |
| Bearing System | High-Performance Dual Ball Bearing |
| Fitment Style | Plug & Play (OEM Drop-in) |
| Design Feature | High-Flow CNC Billet Wheel |
Important Installation & Tuning Notices
Please read carefully before purchasing. High-flow 550 HP builds require proper supporting modifications to ensure engine safety and longevity:
Advanced Custom ECU Tuning Required
This is a heavy-hitting performance upgrade. An advanced custom ECU calibration (e.g., Hondata, MoTeC, or individual dyno tune) is strictly required immediately after installation. Do not run this turbo on the stock factory ECU mapping or off-the-shelf stage 1/2 tunes, as it will cause immediate engine damage.
Mandatory Supporting Modifications
To safely achieve and sustain the 450 HP target, you must upgrade your fuel and breathing systems. We highly recommend:
Upgraded fuel system (Upgraded HPFP, injectors, and flex-fuel/E85 hardware)
High-flow/race downpipe and a full 3-inch performance exhaust system
Upgraded front-mount intercooler (FMIC) with enlarged charge pipes
Premium high-flow cold air intake system
Pre-Lubrication & Oil Maintenance
Always change your engine oil and oil filter during installation.
Crucial Step: Manually prime the turbo oil inlet with clean engine oil before connecting the oil feed line. Crank the engine over without starting it to build oil pressure, then allow it to idle for 3–5 minutes before revving or driving.
Professional Installation Only
Proper installation requires expert performance mechanical knowledge. Warranty claims may be voided if the unit is not installed by a certified performance shop or qualified technician.
Turbo Spec. / Turbo Information
Max1 Model: FK8-RC4-450
Max1 Number: 01-C-11-001
Bearing System: Ball Bearing
Fitting: Direct Bolt-on
Compressor Wheel Sizes: Inducer: 54.28mm, Exducer:67.4 mm, 8+0 blades
Vehicle Info.
Car Maker: HONDA
Car Model: Civic Type-R FK2, 2017- Civic Type-R FK8,
2018- ACCORD CV2, 2019- ACURA RDX
Engine code: FK8
Horsepower indication: Making 450 HP
Need Help?
If you have any questions about this product or need more information, please feel free to contact us.