Arlen Ness 10 Gauge Cover - 12-575 For Harley Motorcycles 1999-2017 Electra Glide 1-3/4" headpipe steps up to

1-3/4" headpipe steps up to 1-7/8" into the collector to increase flow and improve performance

The Ring alone provides some restriction but is primarily for looks and the majority of restriction comes from the additional insert

Product Name Seat Type 2-Up Seat Model Kickflip Base Color Black Material Vinyl / BikerTec Fill Material Marathon Foam Decoration Pleated Overall Seat Length 31" Driver Seat Length 15" Driver Seat Width 12-1/4" Rear Seat Length 13-1/2" Rear Seat Width 8-1/2" Units Each Riding Style Street

two of which can be expanded for added capacity

Note:Fits a '84-'99 Evolution Big Twin (80") that requires a manifold with a map sensor port

Arlen Ness 10 Gauge Cover - 12-575 For Harley Motorcycles 1999-2017 Electra Glide 1-3/4" headpipe steps up toFeatures Machined from 6061 T 6 billet aluminum Chrome hardware included Sold in pairs Specs Product Name Cover Type Lifter Block Model 10 Gauge Color Finish Anodized Titanium Material 6061 T6 Billet Aluminum Units Pair Riding Style Street 1999 2000 Harley Davidson Dyna Convertible FXDS CONV 1999 2009,2014 2017 Harley Davidson Dyna Low Rider FXDL 1999 2008,2010 2017 Harley Davidson Dyna Wide Glide FXDWG 1999 2013 Harley Davidson Electra Glide Classic