HKS 32016-AT130 Exhaust System Hi-Power SPEC-L II CUP for TOYOTA GR86 / SUBARU BRZ 2021+

Lightweighting is the most valuable modification!

Lightweighting brings nimble and quick handling! By moving the weight as much as possible to the center of the vehicle, the yaw moment of inertia during cornering is reduced. Lightweight exhaust for the fastest car!

Meticulously calculated performance improvement!!

HKS has found the best pipe diameter for the FA24 and the powerful torque it delivers. If the pipe is too narrow, the exhaust efficiency will not be good, and if it is too thick, the exhaust will not flow smoothly. The Hi-Power SPEC-L II for CUP is the result of the perfect balance of high exhaust efficiency and low resistance due to the best pipe diameter.

Key Points for Performance Improvement

The optimum pipe diameter for the GR86/BRZ FA24 engine has been investigated from various aspects to achieve the best pipe diameter for use with NA engines and the powerful torque that this provides. If the pipe is too thin, the exhaust will clog, and if it is too thick, the exhaust will not flow smoothly, conversely, exhaust efficiency will deteriorate and torque output will decrease. The Hi-Power SPEC-L II for CUP is the result of the perfect balance of exhaust pressure resistance and flow efficiency!

Significant reduction in rear overhang weight

The stock has a heavy main silencer placed on the rear overhang. It weighs 10.5 kg! Hi-Power SPEC-L II for CUP weighs 2.7kg, a significant weight reduction of 25% compared to the stock weight. By moving the weight of the exhaust to the center of the vehicle as much as possible, the yaw moment of inertia during cornering is reduced, resulting in a exhaust that is designed for racing!

Minimum Ground Clearance

For GR86 and BRZ, due to the shape of the floor, the position of the pipe that passes near the rear subframe is at the lowest ground clearance. Therefore, by placing the pipe that passes under the rear member as close to the vehicle side as possible, we have secured a minimum ground clearance of 140 mm. (7mm higher than stock exhaust system.) The pipe is designed to be as close as possible to the rear SUBFRAME to ensure ground clearance, which brings the risk of interference between the pipe and the rear member. However, brackets are added to prevent the pipe from movement during driving. It also has the advantage of suppressing lateral swaying of the exhaust during sports driving, thus preventing unnecessary inertia. Furthermore, the entire exhaust system has been placed in the floor as much as possible to flatten the underside, and the layout has been carefully designed to reduce the risk of hitting the road surface when sport driving.