Deliver up to +6.9kW (+9PS) with muffler upgrade
Full dual straight layout without tapering near catalyzer to bring high power engine performance. It adds up to 6.9kw (9ps) by only muffler replacement. The muffler is also designed for assuming future power tuning to bring out its potential performance.

Combines comfort at usual use and sporty sound
Optimized silencer and using a silent chamber achieves the comfort at the normal driving without spoiling the performance potential.

Remarks

For 400R. Not compatible with other grades except for 400R because the certification has not been acquired yet. Not compatible with vehicle minor model change in October 2022 or later because the clearance between the surrounding of the canister and the product has not been confirmed yet.

About HKS muffler

*1: About center pipe
Diameter of center pipe is the portion that has the largest diameter. (Excluding silencer and tip.) It is the condition with stock suspension.

*2: Minimum road clearance between HKS muffler (Any parts included in the kit) and road surface. Therefore, it may be different from actual road clearance of the vehicle.
The data is basically the condition with stock suspension. However, please understand that some items have data with low down spring or ride height adjustable suspension kit.

Caution: Hook, bracket, stay may be changed without prior notice.

★ Exhaust noise level at idle.