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MercRacing MR1320 TVS HARROP Supercharger Kit (Air to Air), Honda K-Series Engines (Universal fitment to K20/K24)

Part Number:
Merc Racing
Product Line:
MR1320 TVS HARROP Supercharger Kit (Air to Air)
Vehicle Fitment:
Honda I-4, K-Series (Universal fitment to K20/K24)
MercRacing MR1320 TVS HARROP Supercharger Kit (Air to Air), Honda K-Series Engines (Universal fitment to K20/K24)



Supercharger kit for Honda/Acura K20/24 Engines. This kit uses the Harrop TVS unit. Fast turn around on this setup.

Capable of over 350+HP system and 400HP+ with E70,E85+ fuels
Boost the power output of your K-Series Honda/Acura engine, while retaining drivability, fuel economy, and reliability with this MercRacing MR1320 Supercharger Kit. The kit delivers approximately 350+ horsepower on pump gas and over 400HP on E70+ fuels. Besides peak horsepower and torque this supercharger offers real “under the curve” power and near instantaneous boost and torque upon demand. The kit not only allows you to keep your air conditioner system but surpasses the power of Rotrex based supercharger kits.


  • 1320 TVS Harrop supercharger
  • Air to Air manifold
  • Associated mounting hardware
  • High quality finish CNC inlet – ready for Stock thru 74mm throttle bodies
  • Your choice of throttle body adapter for your vehicle.
  • 80-90MM Inlet option available ad additional cost for drive by cable cars.

Fitment Notes:

You must replace the thermostat housing with one that points downwards. Such as the Acura RSX Type S. This does two things. Provides clearance for the massive manifold, puts additional heat away from the manifold. This is a known issue on 8th Gen Civics and newer.

  • Thermostat Housing Part#: 19320-PNA-003
  • Thermostat Part#:  19301-PNA-003
  • This is a direct bolt on kit for Honda Civic 8th/9th Gen. Direct bolt on into TSX.
  • RSX requires a small change on the support bar frame to clear the bypass unit.
  • EP3 cars will require you to modify or replace the hood support bar and use hood latches.

Customer Questions

Q:How do high mileage, 145k+, motors handle being boosted? I saw an earlier question where you stated it comes down to user. How well can high mileage motors handle boost?

If the engine is in good condition and properly maintained the mileage on the engine is not a significant factor in reliability. They handle boost the same as new ones do. Again, this is assuming proper maintenance and care has been taken over time. Therefore, it is a user-based concern. Not a mileage based concern.

Q:At me costs HONDATA Flashpro, what calibration can be used for this supercharger?

A Hondata Flashpro is a suitable tuning tool for this supercharger package.

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