Product info 90 HIGH PERFORMANCE MUFFLER Instructions: �- Apply to 90 size helicopters, according to the strength character of 90 engine to design, features much increase the horsepower, fuel-saving, low noise, and the highest air exhaust volume on the market. �- Great design and test to three spaces: expansion chamber, accelerated section, silencer chamber, high efficiency and the quick respond of medium speed and high speed, great for 3D flying. �- Use for O.S 91SR/HZ & ALIGN 91H/HP engine. Specification: �- Size: Ø49.1 x 318 x 81.75mm �- Weight:260g Accessories: �- Pressure nipple x1 �- Exhaust guide x1 (Ø13.5xØ18.5x79.75mm) �- Spacer x2 �- Collar screw x2(M4x45mm) �- Spring Washer x2 �- Strap x 1(100mm) Product name 90 HIGH PERFORMANCE MUFFLER Product number TR-HE90H15T   In stock  Price for 1 87,19 EUR (incl. VAT) Amount    Buy   «-Back  USDDKKEUR     Show without VAT   Tip   Print If you have any questions feel free to call us.