After many tests, Hasi engines is proud to present its newest development. 
The new backplate reduces friction, improves the flushing inside the crankcase and with that improves the torque in the bottom to mid rpm range. 

AVAILABLE IN VARIOUS SIZES. PLEASE CHOOSE FROM DROP DOWN BOX

Developed after more than a year of testing with our team drivers, this exhaust guarantees better engine operation throughout its range of use, combining a sound without compromises.

Developed after more than a year of testing with our team drivers, this exhaust guarantees better engine operation throughout its range of use, combining a sound without compromises.

HARD COATED

A conical 90° version which offers more torque in the low and middle rpm and is a perfect choice for fast tracks.

A conical 90° version which offers more torque in the low and middle rpm and is a perfect choice for fast tracks.

In Stock Now.

Special Introductory Offer (Existing Stock Only)

The engines are totally new and are different from the previous version in the following details:

- New high dissipation and low density aluminium cooling head, to combine functionality and lightweight;
- New crankshaft, with revised timing and balancing;
- New piston and liner, 7 PORTS with high compression piston made from rod;
- New reinforced conrod;

Each engine will have its own dedicated sleeve, which will be perfectly honed inside the crankcase, avoiding dangerous vibrations; the design of the ports has been revised to combine performance and reliability.

Like every Hasi engine, they are numbered one by one and accompanied by a certificate of guarantee and authenticity and the useful engine book.

AVAILABLE WITH SEVERAL OPTIONS ......
YOU CAN CHOOSE YOUR PERFECT CONFIGURATION.   PHONE FOR DETAILS

To order:

The engines are totally new and are different from the previous version in the following details:

- New high dissipation and low density aluminium cooling head, to combine functionality and light weight;
- New crankshaft, with revised timing and balancing;
- New piston and liner, 9 PORTS with high compression piston made from rod;
- New reinforced conrod;

Each engine will have its own dedicated sleeve, which will be perfectly honed inside the crankcase, avoiding dangerous vibrations; the design of the ports has been revised to combine performance and reliability.

Like every Hasi engine, they are numbered one by one and accompanied by a certificate of guarantee and authenticity and the useful engine book.

AVAILABLE WITH SEVERAL OPTIONS ......
YOU CAN CHOOSE YOUR PERFECT CONFIGURATION.   PHONE FOR DETAILS

The engines are totally new and are different from the previous version in the following details:

- New high dissipation and low density aluminium cooling head, to combine functionality and lightweight;
- New crankshaft, with revised timing and balancing;
- New piston and liner
  7 PORTS AAC* with high compression piston made from rod;         *(Aluminium Piston, Aluminium Liner, Chrome Plated Liner)
- New reinforced conrod;

Each engine will have its own dedicated sleeve, which will be perfectly honed inside the crankcase, avoiding dangerous vibrations; the design of the ports has been revised to combine performance and reliability.

Like every Hasi engine, they are numbered one by one and accompanied by a certificate of guarantee and authenticity and the useful engine book.

Also available to order 'Part Run-In'. 

Also available in 9 port at same price - to order.

Special Introductory offer on all AACR7 ordered before December 30th 2023.    Offer ends today!

Offer applies to UK customers only!