Quiet Tuned Pipes • Tuned Pipes
Muffled Tuned Pipes

2014


Quiet Tuned Pipes


(Quiet Tuned Pipes or Pattern Pipes are for smooth RPM increase
and smooth transition on and off the pipe.)
Size cc(ci)(Exhaust Dvtr) Length Weight Price Stock #
3.5cc (.20-.36) -- (#9115) 13" 2.4 oz 76.95 1020
7.5cc (.40-.50) -- (#9115) 16 1/2" 3.4 oz 91.95 1040 *
8.5cc (.45-.60) -- (#9115) 16 3/4" 4.0 oz 110.95 1050 *
10cc (.60-.75) -- (#9115) 18 1/2" 4.2 oz 113.95 1060 *
10cc (.60-.75) long-stroke 18 1/2" 4.2 oz 118.95 1062
10cc (.50-.70) Short Helo Pipe 15 1/2" 3.8 oz 121.95 1701
90' Header Elbow (for 3/4" hp's)
for photos see Helo Systems
- - 31.95 1702
15cc (.80-1.2) -- (#9115) 20 1/8" 5.0 oz 146.95 1090 *
20cc (.95-1.4) long-stroke - F3A 22 1/8" 5.6 oz 163.95 1092
25cc (1.2-1.7) -- (#9116) 23 1/2" 6.8 oz 197.95 1095 *
35cc (1.5-3.2) -- (#9117) 25" 8.0 oz 241.95 1096 *
60cc (3.2-4.8) -- (#9117) 27 1/2" 9.2 oz 268.95 1097 *

(*) A Quiet Tuned Pipe or a Single (Q)uiet Tuned Pipe is a chamber with baffles that tune the system and quiet the exhaust. A Quiet Tuned Pipe is quieter then a Muffled Tuned Pipe. A Double (Q)uiet Tuned Pipe, as seen at the bottom of the Marine Tuned Pipe page, is even quieter and can be used on airplanes. Most of the Single (Q)uiet Tuned Pipes, shown on this page, can be made in a Double (Q)uiet version. Contact us for more information.

Please see our NEW Double (Q)uiet pipe at the bottom of the Marine Tuned Pipe Page. They have more possibilities than just marine and helicopter applications

Also see
Headers Pipes (to connect the quiet tuned pipe to the motor)

Tuned Pipes


(Un-muffled Tuned Pipes or Racing Pipes are for RPMs and speed)
Size cc(ci)(Exhaust Dvtr) Length Weight Price Stock #
2.5cc (.10-.15) -- (#9114) 10" 1.2 oz 41.95 1110
3.5cc (.20-.36) -- (#9115) 11" 1.2 oz 42.95 1120
also see 3.5cc Drag Car Pipes
and Truck Pipes Pipes
- - - -
6.5cc (.35-.45) -- (#9115) 11 1/4" 1.8 oz 51.95 1130
7.5cc (.40-.50) -- (#9115) 12 1/4" 2.0 oz 56.95 1140
8.5cc (.45-.60) -- (#9115) 12 3/4" 2.0 oz 62.95 1150
10cc (.60-.75) -- (#9115) 13 1/8" 2.2 oz 63.95 1160
15cc (.80-1.2) -- (#9115) 15 1/2" 3.0 oz 70.95 1190
25cc (1.2-1.7) -- (#9116) 23" 6.0 oz 115.95 1195
35cc (1.5-3.2) -- (#9117) 23 1/2" 6.6 oz 133.95 * 1196
60cc (3.2-4.8) -- (#9117) 26" 7.6 oz 154.95 * 1197

An un-muffled Tuned Pipe is a two-cone chamber with out any restrictions other than the back cone and the end stinger. Parts, from front to the back, first, head pipe or lead-in pipe, front cone, flat section or high point, back cone or focus cone, and last the stinger.

(*) These Pipes will be available as we can acquire the 2 1/4od x.035w 6061t6 aluminum we use for the main can section. Please contact us. --------

Also see
Headers Pipes (to connect the tuned pipe to the motor)

Muffled Tuned Pipes


(Muffled Tuned Pipes or Fun-fly Pipes are for general field flying)
Size cc(ci)(Exhaust Dvtr) Length Weight Price Stock #
2.5cc (.10-.15) -- (#9114) 12" 2.0 oz 72.95 1210
3.5cc (.20-.36) -- (#9115) 13" 2.4 oz 75.95 1220
6.5cc (.35-.45) -- (#9115)
14 1/4" 3.4 oz 87.95 1230
7.5cc (.40-.50) -- (#9115) 15 1/4" 3.6 oz 90.95 1240
8.5cc (.45-.60) -- (#9115) 16 3/4" 4.2 oz 109.95 1250
10cc (.60-.75) -- (#9115) 19" 4.8 oz 112.95 1260
15cc (.80-1.2) -- (#9115) 21 1/8" 5.0 oz 129.95 1290

A Muffled Tuned Pipe is an un-muffled tuned pipe with a muffling can added over the back cone.

Also see
Headers Pipes (to connect the muffled tuned pipe to the motor)


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Macs Products
7935A Carlton Rd.
Sacramento, CA 95826