Original: $776.35
-65%$776.35
$271.72The Story
Highlights
Doug’s is the pioneering force behind the popular TRI-Y design for cars and trucks. The unique, shortend, paired primary tubes increase mid-range torque without sacrificing top end power. TRI-Y’s are a great choice for daily drivers and heavy duty trucks looking to increase power from idle up to 4500 RPM while maintaining maximum fuel efficiency.
- For manual tranmission. For automatic transmission, please see D660YA-B.
- 3/8” thick machined flanges to prevent warping
- CNC mandrel bent tubes for an accurate fit and improved flow
- Durable 16 gauge tubing
- 1 5/8" Primary Tubing Diameter
- 2.5" Collector Port Diameter
- Same as Port Port Shape
- Hi-Temp Black Coating
Built for durability without the added cost of specialty coatings, our high-temp black finish delivers clean looks and reliable protection where it counts. Designed to withstand the heat of everyday performance, this coating helps guard against rust and corrosion while maintaining a smooth, uniform appearance. The sleek black finish offers a subtle, aggressive style that holds up under real-world conditions—making it a practical, no-nonsense choice for drivers who want solid protection and a classic look without the need for thermal barrier coatings.
Description
Highlights
Doug’s is the pioneering force behind the popular TRI-Y design for cars and trucks. The unique, shortend, paired primary tubes increase mid-range torque without sacrificing top end power. TRI-Y’s are a great choice for daily drivers and heavy duty trucks looking to increase power from idle up to 4500 RPM while maintaining maximum fuel efficiency.
- For manual tranmission. For automatic transmission, please see D660YA-B.
- 3/8” thick machined flanges to prevent warping
- CNC mandrel bent tubes for an accurate fit and improved flow
- Durable 16 gauge tubing
- 1 5/8" Primary Tubing Diameter
- 2.5" Collector Port Diameter
- Same as Port Port Shape
- Hi-Temp Black Coating
Built for durability without the added cost of specialty coatings, our high-temp black finish delivers clean looks and reliable protection where it counts. Designed to withstand the heat of everyday performance, this coating helps guard against rust and corrosion while maintaining a smooth, uniform appearance. The sleek black finish offers a subtle, aggressive style that holds up under real-world conditions—making it a practical, no-nonsense choice for drivers who want solid protection and a classic look without the need for thermal barrier coatings.
