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Exhaust Systems

HEADERS - All headers are $38  

(1) 90 Deg. header with 3"offset and 90 Deg. bend

(5) 105 Deg. header with 1"offset and 105 deg bend
(6) Wrap to flush  header will put pipe approximately 1 3/4" from engine centerline(
(9) 90/90 header with 1 inch offset and 2 1/2" rise
(12) 90 Deg. header with 25 Deg. angle down, 1" drop and 4" offset
(13) 90 Deg. header with 25 Deg. angle down, 1" drop and 3" offset

Exhaust Flanges

Two-piece Header Flange with Viton O-rings - The flange supports our headers in a water-cooled environment, enabling the exhaust to remain cool and dry. - $40 specify for Zenoah or QuickDraw use.

B.H. Hanson Pipe Stopper

This ring clamps to our 7/8th header pipe and stops the pipe from sliding towards the engine while holding the pipe firmly with Viton o-rings. It makes pipe adjusting easy using the ring as a reference point for length. The ring is properly sized so it wont scratch the header when sliding it on and there is no chance of radio noise or pipe damage as with other designs that use a metal piece that goes over the pipe nipple. - $16.95


Helicopter Muffler - With gaskets and bolts. $29.50
Aircraft Muffler - With gaskets and bolts. $28.50
Stinger Marine Muffler - fits all BH Hanson marine tuned pipes - $36

BH Hanson Whiplash Tuned Helicopter Exhaust System

Whiplash Tuned Exhaust
This Heli system offers adjustable brackets, mounts and variable tuned length to suit a variety of applications.
It is shown  for the M.A. Whiplash right side exit use with other applications available soon.
The muffler concept was designed by Japanese racer Hiroyuki Okuma and modified for Heli use by Macs Products.
It is quiet without reducing power and has been tested with our 270, 290 and 300 engines.
Complete System - $259
Muffled tuned pipe only - $185
Screw in style header w. hardware gasket and wrench - $85
Spare screw in coupler, 2.5 inch - $8.95
Spare mount bracket for custom applications - $11.95
Spare rubber mounts w hardware, 2 pcs - $9.95
Pipe rings with silicone covering and spring - $25
This system is made in the U.S.A. and has been developed and tested using our engines.

Tuned Helicopter exhaust system  
At only 88 db's, it is extremely quiet yet very powerful.
BH Hanson Tuned Helicopter exhaust system for left side exit. Approximately 24 inches in length measuring
from the center of the exhaust port to pipe tip.  2 1/2 inch center to center rise.  $229
Heli Tuned Pipes
Heli systems using the large volume pipe which is recommended for the 26 and larger engines are $269
Above left system shown with optional header cooler ($32.95 ) for longer coupler life.  All tuned Helicopter systems now come with medical grade silicone couplers ($22) and Snap type clamps.($2.99 for 2)