Street Rods
& Muscle Cars



Pontiac G8,
Chevrolet SS, Camaro, Holden Commadore

Corvettes

Semitrucks


Motorcycles


Info
& Advertising

 

Semi-Truck & Busses Application

Spiral Turbo Specialties has developed an exhaust baffle system for the semi-truck, bus, and heavy duty vehicle industry. This system not only significantly reduces noise levels, increase horse-power and torque, BUT also improves fuel economy by 3%-8% (depending on driver, geographic area, and all the other varialbles concerned with obtaining better fuel economy).

Main Improvements:

  1. dB levels are within 1-2 dB's of stock OEM mufflers (80-82 dB's)
  2. Horsepower and torque increases, but vary for different models.
  3. Pyrometer temperatures have dropped 50-100°. COOLER TEMPERATURES MEANS BETTER MILEAGE.
  4. Turbo chargers spool up quicker. Quicker spooling also means better EFFICIENCY.
  5. STRAIGHT STACK LOOK...without the noise or the tickets! The STS Baffles fit "INSIDE" the stacks.
  6. Mileage up 3%-8% on average.
  7. ALL Steel construction, 14 gauge Aluminized.
  8. LESS RESTRICTION means everything runs better.
  9. Idles better.

Your test results may vary according to conditions, engine set-ups, geographical area, etc. Many state patrol agencies across the USA are familiar with the STS Baffles, and how they control dB levels. Jake Brake levels remain the same or slightly higher though. 6.0" STS Baffles have a general dB level of 81. These tests for dB levels were done with a loaded trailer, and the tractor was an N14 Cummins. The STS Baffles BOLT in so there is NO Rattling.

Available now is part no. STS6.022545A14 for the 6" stacks.

Available Soon...STS 8.0" incased baffle (5.0" in and 5.0" out) for above 15L and 400 HP motors (dual baffles only).

Total lenth for the 8.0" will be a stock 51.0" length. Adapters with the kit to make the install direct bolt on, and will work with your shield.
Call for 8.0" availability.

Questions call STS at 330.321.1918


Wanted



For Maximum Performance We Recommend the Following MINIMUM Sizes for Your Application:

Engine Size
(Litre)
Engine Size
(Cubic inches)
Horsepower Range
Recommended Minimum Size
QP Part #
5.9L
360
ANY
STS52254514A*
7.3L
445
ANY
STS52254514A*
8.3L
506
ANY
STS62254514A
10L
610
ANY
STS52254514A
11L
672
ANY
STS52254514A
11.1L
678
ANY
STS52254514A
12.7L
745
350+
STS62254514A
13L
794
350+
STS62254514A
14L
855
ANY
STS62254514A
14.6L
892
UP TO 350
STS62254514A
14.6L
892
350+
STS62254514A
14.7L
898
UP TO 350
STS62254514A
14.7L
898
350+
STS62254514A
15L
916
UP TO 400
STS62254514A
15L
916
400+
STS72254514A
16L
977
UP TO 400
STS72254514A
16L
977
400+
STS72254514A
16L
977+
400+
STS82.2536.512A

*A single STS can be used for these smaller engines. To determine litre size, take your cubic inch÷61.07=litre size (855ci÷61.07=14litre)

PRODUCT PRICE
(5.0") STS52254514A* Call for pricing
(6.0") STS62254514A Call for pricing
(7.0") STS2254514A Call for pricing
(8.0") STS82.2536.512A* Call for pricing

*Available soon. Call for info.
**Dual Application-dual baffles shipped bound together.


*Call for available dealers.



       
Made in USA