BOE Racing Exhaust, Silent Touch

The rebuildable racing exhaust for the Lotus Elise and Exige that is also suitable for daily driving.  quieter than our Quarter-Stick and only ~11 lbs!

Design 

The dimensions were tested extensively with many different combinations of silencer diameter, core diameter, length, and packing material consistency to get great power, great sound, and kill the annoying drone present in so many exhausts including the factory and stage II systems.

Construction

Our BOE Exhausts are all 304 stainless construction with mandrel bent exit pipe and 100% TIG welded. Its 2.5" straight-through design reduces back pressure to support high power applications. They have been tested on cars with 320HP both on and off the race track. The BOE Exhaust is designed specifically for the Lotus Elise/Exige platform by BOE and Coast Fabrication. Click the Additional Information tab for more.

Mounting

Mounted using BOE's proprietary stainless steel mounting rod system. This rod mounts in the stock exhaust hangers. Through several trials, we've arrived at just the right amount of flex (compared to other rigid systems on the market), which allows the exhaust to move, eliminating the stress cracking that has plagued other exhausts. Additionally, there are provisions in the mounting system to reduce the chances of the exhaust "walking" to the passenger side of the vehicle; another problem many other systems are dealing with today. See the Additional Information tab for more.

Rebuildable

Unlike any other Lotus exhaust on the market, The ST-5 is rebuildable. After a couple of seasons of hard racing, you can undo the end cap and rebuild the exhaust with an inexpensive rebuild kit.

Weight

Critical to any racer, especially the Lotus owner. These are the lightest exhausts on the market for the Lotus: Including all the clamps, mounting rod, tip and silencer. The Silent Touch weighs in around 11lbs!

Sound

Now we get to the best part! These exhausts were extensively tested for great sound as well as power production.

Silent Touch

Off-cam it has a deeper, richer sound than stock and about the same volume. No drone. On-cam is still quiet vs the Silent Touch, perfect for folks that want to be stealthy or have their best chance to pass sound at the local track.  Very liveable on a day-to-day basis.

This is a "high exit" exhaust, which requires removing part of the heat shielding and either trimming or removing one of the rear side panels. Additionally you can select the "low-exit" which is stock "thru-diffuser.  We recommend the Blackwatch rear license plate bracket that replaces the rear panel.