Too Old, I would appreciate that, do you also have dimensions for the transom mount as far as how far they extend out from transom and how far towards tips into engine compartment. Thanks! Steve

BY U BOY, If you could I would appreciate that article also. I seem to have purged the older Hot Boat issues. Thanks! Steve

509 SC, I have 2 sets of Gibson 4 1/2" clamp-ons I will sell you cheap if interested....I went with IMCO Gatlins built into the tailpipes....so they're just sitting in the garage

Tom

Hustlethis, Thanks for the offer but I'm going with transom mounts! Steve I know this thread is about clamp-ons but the silencing qualities are the same, I think!!???

Too Old, Are the Gibsons available in transom mount? That's what I was inquiring about. Steve

Yes they are.....

The Gibson Bullet Marine Silencers have proven to reduce decibel ranges within and to surpass the 88 db limits required by the California SAE J2005 Motorboat Sound Law without compromising power. The Gibson Bullet mufflers are manufactured from highly polished T-304 stainless steel and are designed with Gibson’s patented clamp-less system for hassle free installation. Power Tip Marine Mufflers are also available with OE style thru-transom mounts to provide the factory look without the factory sound.

For real world DB numbers on some of the competitors, I have the DNR record from tests conducted on Lake George N.Y. in October.

The Gibson Bullets Feature the Following:Ease of installation.
Tested up to 1,200 HP with minimal or no power loss.
High quality Stainless Steel construction.
OEM style transom mount.
Straight through design.
Utilizes water to dampen sound.
Has been designed and flow tested to ensure maximum flow.

These silencers were specifically designed for large displacement motors such as 500HP, 502, 525, 525SC, 575. and up to 1,200hp. Gibson is in constant contact with all major Performance boat builders.

Priced sensibly! Dare to Compare.

CMI Sound Elimination Muffers reduce sound emissions to levels as low as 85 dB. The mufflers are engineered to reduce sound without restricting the exhaust or creating unwanted backressure, which can inhibit the engine from reaching peak power. A superior design using T-304 stainless steel results in fewer parts than competitive models.

Besides being designed and built by the industry leader, these mufflers look great, provide a nice muffled sound at idle and open full for high performance operation.

OE thru-transom mount and clamp on styles in stock now for immediate delivery. Free shipping until January 1, 2007.

We will beat any competitors price.

I bought the Zoomers. They look great and the customer service was excellent. I have not tried them yet though.

Keep us posted. It's always nice to hear real world results.

I HAVE SENT THE MAG TO SMITHBOY MAYBE HE CAN SEND IT TO YOU WHEN HE IS DONE. I DO NOT NEED IT BACK.