Green Sky Adventures, Inc.    of North Central Florida
  Ph 352 475-5625         Mobile 352 318-5625    or Email 
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Below is a listing of some of the Rotax exhaust components and their applications.
Tested performance variations are noted on certain combinations.
Current 2003 Pricing as of Feb 15, 2003
This information is for reference only. 
Exhaust Shop
Mufflers
Manifolds / Elbows
Misc Exhaust Parts
Exhaust Cross Ref. Chart
Mufflers
277
377
447
503
532
582
618
912
Straight Muffler        973 191    $360.79
*
*
*
*
 . . .
Straight Muffler        973 192    $360.79
. . . .
*
*
. .
Sidemount Muffler    973 198    $360.79
*
*
*
*
. . . .
Sidemount Muffler    973 197    $360.79
. . . .
*
*
. .
Sidemount Muffler    978 840    $684.94
. . . . . .
*
na
Fisher Style Muffler  973 203    $360.79
*
*
*
*
**
**
na na
Notice: 
On 532 and 582, a special version of straight and sidemount mufflers is used. Their inlet cones are slightly shorter. No provision was ever made for a special inlet cone on the Fisher version. In testing, Green Sky has found a decrease of approximately 200 rpm and EGT increase of 75 degrees F,  using the Fisher style muffler and stock manifold and elbow.
90 Degree Muffler     973 274    $360.79
na
*
*
*
*
*
na na
90 Degree Muffler     978 845    $684.94
na na na na na na
*
na
2 x 90 Degree Muffler           (Obsolete)
na
*
*
*
*
*
na na
Elbows, 90 Degree
277
377
447
503
532
582
618
912
 W/O Hooks                973 180     $93.51
na
*
*
*
*
*
na na
  With Hooks               973 183    $120.72
na na na na na na
*
na
 With Hooks               973 095    $135.11
*
na na na na na na na
Elbows, 45 Degree
 With Hooks                879 101    $108.65
*
na na na na na na na
Exhaust Manifolds
277
377
447
503
532
582
618
912
W Hooks & EGT Bosses 979 380   $164.14
na
*
*
na na na na na
W Hooks & EGT Bosses 878 937   $ 120.72
na na na
*
na na na na
W Hooks & EGT Bosses 973 121   $159.20
na na na na
*
*
na na
W Hooks & EGT Bosses 979 210   $251.80
na na na na na na
*
na
Misc Exhaust Parts
277
377
447
503
532
582
618
912
Exhaust Hook                         853 355   $1.11 ea
*
*
*
*
*
*
*
*
Exh Spring 66mm Pin to Pin    938 795   $2.22 ea
 *
*
*
*
na na
*
*
Exh Spring 75mm Pin to Pin    938 790   $2.77 ea
na na na na
*
*
na na
Exhaust Spring Pliers  only $15.85

Details
*
*
*
*
*
*
*
*
 Gasket, Exh Manifold              831 847   $5.28 ea
*
na na na na na na na
Gasket, Exh Manifold              850 114   $5.28 ea
na
*
*
na na na na na
Gasket, Exh Manifold              831 849   $5.59 ea
na na na
*
na na na na
Gasket, Exh Manifold              850 633   $7.26 ea
na na na na
*
*
na na
Gasket, Exh Manifold              850 552   $6.12 ea
na na na na na na
*
na
Exhaust Manifold Bolts
 Allen Head M8 x 30 (2rqd./ cyl)   840 991   $ .79 ea
*
*
*
*
*
*
*
 
 Allen Head M6 x 25 (4rqd./ cyl)   840 861   $ .60 ea
na na na na na na
*
na
After Muffler Kit