The only truly “QUIET” pipes, available for .30-6.00 cu. in. engines. Built to last, these pipes utilize thick wall aluminum, machined end caps, and steel baffles to achieve the
ultimate power. The giant scale muffled pipes have won at Reno and Madera air races.

Model Size (cu.in.) Dimension (dia. x length)
SM-QP40
SM-QP60
SM-QPHP60
Giant Scale Models
SM-QP90
SM-QHP90
SM-QHP90B
SM-QP190
SM-QP290
.32 – .46
.50 – .65
.60 – .67

.74 – 1.34
.77 – .91
.77 – .91
1.50 – 2.20
2.60 – 6.00
1.40 x 13.00
1.60 x 15.00
1.60 x 17.00 boat/jet

1.60 x 17.00
1.60 x 18.00 boat/jet
1.60 x 17.00 byron
1.80 x 24.00
2.00 x 25.00

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