Triple Exhaust Systems
OOP (Out Of Production) Systems
I will attempt to document some of the OEM and 3rd party systems made for the triples when they were still being produced.
This section is for info only since these systems are no longer in production.
They occasionally show up on internet auction sites, salvage yards and for trade.
The OEM systems have been out of production and unavailable for many years.
They can be reproduced, and several 3rd party vendors offer them.
In 1998 Hooker Headers discovered hundreds of new, complete exhaust systems for Japanese bikes of the '70s and '80s stored in a warehouse.
They were selling them for up to 60% off retail.
The system pictured is for the triple and sold for ~$140, the original price was $400 (part #27031).
It is a 3 to 1 to 3 configuration and according to Hooker only fits the D/2D and probably won't fit the Specials or later Standards without some creative mounting techniques.
The only downside of this particular system is the required removal of the centerstand, but the sound is intoxicating.
Hooker was acquired by Holley recently and has moved to Kentucky.
They are no longer selling the remaining NOS exhaust systems.
The Yamaha triple community is trying to procure all the remaining triples systems.
Hooker also produced a 3-1 and a 3-3 system for the Yamaha triples.
Here's a 3-1-3 system laid out on a table; mounted on my triple (right front 3/4); and a close up
Left side view Odd looking from the rear, great sound
Kerker Performance Exhaust (Supertrapp)
The Kerker 3-2-1 system is widely acknowledged as the premier exhaust system for the Yamaha triples.
It produces the widest and most useable powerband and the greatest increase in overall power.
The Kerker system is easily recognised by the split center header.
Jardine may still produce replacement mufflers (silencers) for the triples.
They are available in either 3-1 or 3-2 configuration.
I purchased a NOS 3-1 Jardine for my triple, complete with headers.
I Dyno-Koted the headers and it looks very good.
Jardine's 3-1 system is easily identified by the in-line alignment of the headers into the muffler.
All laid out on a table Full system installed view
You will notice a number of different style hangers to attach the muffler to the frame.
They permit this system to be installed on either a Standard or Special.
I still had the original triangular mount from the Jardine 3-1 I used in the 1970s.
It was dirty, but the chrome was in excellent condition so I used it.
Muffler close-up Headers close-up
Spec II 3-1 performance exhaust system.
Spec II has produced quite a few performance parts for the triples.
They may still offer carb and clutch upgrades.
Spec II header resembles the MAC 3-1, notice the collector connection.
Marshall (Laser-Jama), Netherlands
Marshall made (2) 3-1 systems for the triples.
One for the XS750 (56.300406) and another for the XS850 (56.300407). (pdf files)
Production of these systems ceased in 2001, but they can still be found.
