If you want your neighbors to speak to you tomorrow, these are the pipes for you. They let you return your bike to near stock sound levels without returning to stock performance.

The Silent Series 2:1 systems head pipe is designed for maximum performance with usable power gains for every day riding situations.

The 2.5” collector provides maximum flow, ensuring a powerful ride each time. The three-piece heat shields prevent bluing and keep your pipes looking new for thousands of miles.

Silent Series have a totally rebuildable core and packing which minimize your maintenance while saving you time and money. They are available in both a tunable megaphone and a non-tunable straight body design to offer two different, but popular styles.

Tunable megaphone includes fourteen pre-installed 4” discs.

Add 4” discs to increase horsepower, exhaust tone and flow – it’s that easy!

Remove 4” discs to reduce sound and increase low-end-torque.

4" Tunable Disc Accessories

Trapp Caps

Video Forum



Click any Model # for more details.

DESCRIPTION: MODEL# MSRP
2:1 ST QC, HD FLST/FXST '84-11, CHR 878-71572 $729.00
2:1 ST QC,250 TIRE,CUST. SFTL,O2/PLUGS 878-71590 $729.00
2:1QC STRAIGHT HD FLST/FXST '84-11 178-71572 $729.00
2:1QC STRT,250 TIRE,CUST. SFTL,O2/PLUGS 178-71590 $729.00

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