Intake

Breather Bolts For 91-UP Sportster & EVO Big Twin

TC Bros. Breather Bolts For your 1991-newer Sportster & 1993-1999 EVO Big Twin Harley Motors (does not fit Twin Cam models). These bolts are the cleanest way to solve your crankcase venting issues when installing aftermarket air cleaners on your Harley.

They are fully CNC machined 6061 aluminum that is polished for a super clean look! They include stainless steel vent screens, stainless washers, circlips and foam filter elements.
No more ugly hoses and bulky breather filters to deal with!

MADE IN USA!

These work great with our Carburetor Support Brackets (not included). See #109-0083 for Sportster models.

NOT LEGAL FOR SALE OR USE IN CALIFORNIA

Darlington Air Cleaner

Get rid of your bulky air cleaner and show off that H-D Engine! The Prism Supply Co. Darlington Air Cleaners were designed to achieve a clean, classy, and traditional look while maintaining maximum performance. These are beautifully machined from a solid chunk of 6061 aluminum and are available with either a polished or brushed finish. The internal venturi was designed to allow for maximum airflow. The mounting hardware for the cover is installed from the backside and gives that minimal look we all strive for.

With our combination of heavy and fine filtering elements, we can guarantee you’ll be keeping all that unnecessary crud out of your engine. If you ever are in need of a replacement filter element, those can be purchased here.

This compact kit is designed to be used on all H-D engines that use a CV carburetor or factory EFI units (excluding throttle by wire models)

Dimensions are as follows:

• 5.5” diameter
• 1.5” total depth

*Some basic jetting/ tuning may be required upon installation to maintain the correct air/ fuel mixture.

*When installing, it is recommended to use a carburetor support bracket.

Breather Bolts for Harley-Davidson Twin Cam

Stock airboxes on Harley-Davidson Twin Cams integrate a provision for crankcase breathing through the cylinder heads. Eliminating the airbox to run an aftermarket air cleaner also eliminates the hollow breathing bolts.

• Fits all Twin Cam 1999-2017
• Available in Raw Machined or Black finish
• Permits use of many aftermarket air cleaners including all TC Bros air cleaners
• Made in USA
• CNC-machined from 6061 aluminum

These bolts offer an unobtrusive, alternative crankcase venting option when installing aftermarket air cleaners on your Harley-Davidson. They are CNC-machined from 6061 aluminum and offered in two attractive finishes. Stainless steel vent screens, stainless washers, circlips and foam filter elements are included. Sidestep ugly hoses and bulky breather filters with a set of TC Bros. Breather Bolts. Not legal for sale or use in California.

Velocity Stacks for EFI Honda Shadows - VT750

The velocity stack for the EFI Honda Shadows is finally here!  Each stack comes with a surgical-grade stainless steel filtration element. Each stack is attached to the throttle body over a stainless steel filtration element with 3 included set screws.

These will fit the following EFI models

VT750 Phantom
VT750 RS
VT750 Spirit only with EFI
VT750 AERO only with EFI 

Includes: 

• One Single EFI Velocity Stack
• One Stainless Filtration Screen
• 3 Stainless #6-32 Set Screws
• Allen Key for Set Screws

In most cases, you can put a stack on your EFI-controlled bike and the computer will adjust to the new changes within a ride, making this intake an easy plug n play part.  However to get the most out of your intake upgrade and to really see a step up in performance then you may want to look into an aftermarket EFI controller. 

You will need to remove your stock air box to install this velocity stack and either plug your PAIR valves or use a set of TJBC PAIR block-off plates to block them off. 

Stamped Steel Dragtron Style Air Cleaner

• Stamped steel version of our popular die-cast Dragtron air cleaner
• Fits Bendix, Keihin (not CV) and Tillotson carburetors

"Bob" Retro-Style Air Cleaners

• Retro-style air cleaner measures 5-1/2" in diameter
• Replacement filter element available separately
• Requires appropriate carb support bracket
• All necessary mounting hardware included
• Fits Harley-Davidson models 01-17 with EFI (except 16-17 Softail, 16-17 FXDLS, 08-17 FLHT/FLHR/FLTR/FLHX and H-D Trike)
• Fits 99-06 Twin Cam and 88-06 XL w/ CV Carb