✓ VERIFIED
Apr 28, 2022
Very tight but doable. I got the long ones first but they were too long and had to bend and didn’t look good. I would recommend.
KURYAKYN
SKU: T14-604673
Kuryakyn Breather Kit B - Harley Evolution & Twin Cam
$46.99
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About Kuryakyn
Kuryakyn has built bolt-on styling, lighting, controls and touring accessories for American V-twins since 1989. Its catalog is the go-to for riders upgrading a bike a weekend at a time — highway pegs, grips, mirrors, LED lighting and luggage that fit factory mounting points.
The Kuryakyn Breather Kit B is engineered to manage crankcase vapors on 1993-2017 Harley-Davidson Evolution and Twin Cam engines. By routing these vapors away from your air filter, it significantly reduces oil mist buildup, promoting a cleaner intake system.
Why riders pick this
- Reduces oil mist in the air filter
- Reuses stock breather bolts and hoses
- Simple, no-modification installation
- Designed for Evolution and Twin Cam engines
Oil mist in your air filter isn't just messy; it can hinder your engine's performance. This Kuryakyn Breather Kit B provides an effective solution for Harley Evolution and Twin Cam riders, rerouting crankcase gases to keep your air filter cleaner and your engine breathing more efficiently. It's a straightforward upgrade that makes a noticeable difference in long-term maintenance.
Cleaner Airflow, Easier Maintenance
- Significantly reduces oil mist buildup in your air filter
- Designed for easy installation using your stock breather bolts and vent hoses
- No modifications required for most Evolution and Twin Cam models
- Includes all necessary routing components for a complete setup
Simple Upgrade for V-Twin Longevity
This breather kit is a smart investment for any rider looking to optimize their Harley's intake system and simplify maintenance. By preventing oil saturation of your air filter, you ensure more consistent airflow and extend the life of your filter. It's a bolt-on solution that integrates seamlessly with your existing setup, making it an accessible upgrade for a wide range of Harley-Davidson Evolution and Twin Cam models.
Specifications
- Brand: Kuryakyn
- Manufacturer Part #: 9920
- Weight: 0.4 lb
- Category: Engine Components / PCV Valves
Common questions
Is this breather kit compatible with Harley models equipped with Magneti-Marelli EFI?
No, this Kuryakyn Breather Kit B is not compatible with Harley-Davidson models that have Magneti-Marelli EFI. Please verify your fuel system type before ordering.
Do I need to purchase new breather bolts or hoses for this kit?
No, this kit is designed to reuse your stock breather bolts and vent hoses, meaning no additional hardware is required for installation on compatible Harley Evolution and Twin Cam engines.
Does this kit include everything required for installation?
Yes, the Kuryakyn Breather Kit B includes all the routing components necessary for installation, allowing you to effectively manage crankcase vapors on your Harley Evolution or Twin Cam.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Kuryakyn |
| TYPE | PCV Valves |
| SKU | T14-604673 |
| WEIGHT | 0.4 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.11
9 RATINGS
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0
✓ VERIFIED
Jun 18, 2021
Looks great and works great. On more garbage air and oily mess being sucked into my engine. Money well spent.
✓ VERIFIED
Feb 12, 2009
Good except for cheap plastic wye that will probably last a month or so if I am even that lucky.
✓ VERIFIED
Sep 10, 2008
works ok. a little over priced. Should send enough tubing of the right diameter to run the line to bottom of motorcycle
✓ VERIFIED
Jul 4, 2025
Breather kit
The materials are top notch; however, the elbows are 3/8" not 5/16" like the hose and the top two ins on the Y-line fitting. The Y-line fitting then goes back to 3/8" out. Doesn't make much sense and only 5/16" hose is included.
✓ VERIFIED
Dec 23, 2019
5 Stars
