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Installation of a good expansion chamber with a high flow air filter will really increase the horse power of your two stroke.

We manufacture our own PERFORMANCE EXHAUST systems For the Yamaha 2-strokes.  We are also an authorized dealer for JL-Exhausts by Jim Lomas, and we also carry the economical DG exhaust.  Select the Brands below to check out what is offered.

Jetting changes will be required. here is a guide to help out (Jetting Info)

 

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2- Stroke Silencers

  • The same silencers we use on our HVCcycle Performance Exhaust

  • 62mm (2 7/16) round. Body is 260mm (10.25 inches) long, Small singer is 80mm (3 1/8inch) long

  • All aluminum construction except for the mounting flange.

  • Mounting flange is Steel with a 25.4mm (1 inch) ID so it can be welded on to your exhaust stinger.  Attaches to the silencer with 3 Allan head bolts.

  • Silencers are rebuilable

$100.00ea (NH-004-01A)

 

Cylinder Exhaust Studs

$3.50 each (EX-1234)

 

Fiberglass Muffler Packing

  • Repack blown-out silencer for quieter running and more power
  • Long-filament fiberglass made especially for muffler packing
  • Measures 11” x 16”, more than enough to repack virtually any muffler

$7.95 (M701)

Replacement Yamaha Baffles

Reproduction Baffles

These baffles are similar size and shape of the stock baffles.

           Applications:

  • Yamaha R5 and DS7 70-72

  • Yamaha RD250/ 350 73-75

  • Yamaha RD400 1976-1979

  • Yamaha RD350LC 1980- 1982

$69.99 (MK209)

 

 RD400 Exhaust Downpipe Rubber Connector Kit

  • Reproduction Parts, Fits and looks like the original.

  • Fits all the RD400's 1976-1979

  • Replace your cracked or missing exhaust Joint.

  • High Quality molded rubber with a heat resistant sleeve

  • Kit contains

    • Rubber connector with 2 stainless steel springs x2

    • Gaskets x2

 

$90.95 (MK243)



OEM Yamaha RD400 Exhaust Joint

 

  • Fits all the RD400's 1976-1979

  • Replace your cracked or missing exhaust Joint.

  • High Quality molded rubber with a heat resistant sleeve

  • Spring bands included

  • Original Yamaha Part

$106.86 (1A1-14615-02-00)

Exhaust Joint Spring Band

Click to enlarge

  • Fits the above exhaust joint

  • 2 required

$6.95ea (278-14456-00-00)

CASTLE NUT, MUFFLER JOINT
CHROME PLATED CASTLE NUT THAT
JOINS THE DOWNPIPE TO THE SILENCER

Applications

  • Yamaha RD250, RD350 1973-1975

$32.95ea (360-14713-00-00)