Kuryakyn Breather Kit B - Harley Evolution & Twin Cam
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 designed to manage crankcase vapors and oil mist on 1993-1999 Harley-Davidson Evolution and Twin Cam models. By routing these gases upward through banjo fittings and chrome tubes, it leverages gravity to prevent expelled oil droplets from returning to the engine or coating your bike's exterior. This results in a cleaner running engine and a tidier appearance.
Why riders pick this
- Routes crankcase vapors and oil mist upward
- Gravity-fed design minimizes oil carryover
- Features chrome banjo fittings and tubes
- Suitable for open-air venting or with a catch tank
- Complete hardware kit included for easy installation
Unwanted oil mist from crankcase venting can lead to a dirty engine and air filter. The Kuryakyn Breather Kit B offers an effective solution, rerouting these vapors away from critical engine components. Its thoughtful design ensures that oil droplets are contained, minimizing carryover and keeping your Harley cleaner, whether you're cruising or pushing it hard.
Cleaner Engine Operation
- Banjo elbow fittings with chrome tubes route vent gases upward
- Gravity-fed design effectively minimizes oil carryover
- Can be run open to the air or with an optional catch tank
- Complete hardware kit included for straightforward installation
Essential for a Clean V-Twin
This breather kit is an essential upgrade for any rider of a 1993-1999 Harley-Davidson with an Evolution or Twin Cam engine, especially those looking to prevent unsightly oil residue. It's compatible with models that vent crankcase gases through the cylinder heads. The included hardware ensures a complete setup, providing a cleaner running engine and a more enjoyable riding experience.
Specifications
- Brand: Kuryakyn
- Manufacturer Part #: 9930
- Category: Engine Components / PCV Valves
- Weight: 1.2 lb
- Included: (2) Banjo Elbow assemblies, (1) 34 in. hose (5/16 in. ID), (6) aluminum washers, (4) 1/2 in. hose clamps, (1) Y-line fitting, (2) 1/2-13 x 1.325 Evo breather bolts, (2) 3/8-16 x 1.325 TC breather bolts
- California Prop 65: Yes — see P65Warnings.ca.gov
Common questions
Why is it better to vent the crankcase away from the air cleaner?
Venting crankcase gases directly into the air cleaner can introduce oil mist, which can coat your air filter and other components, reducing their efficiency and leading to a messy engine. This kit helps prevent that.
Will this kit fit my specific Harley model?
This kit fits 1993-1999 Harley-Davidson models with Evolution or Twin Cam engines that vent through the cylinder heads. Please use our Shop by Bike tool to confirm exact fitment for your motorcycle.
Does this require any special tools for installation?
Installation typically requires basic hand tools. The kit is designed for a straightforward process, replacing your existing breather setup.
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 | T14-604669 |
| WEIGHT | 1.2 lb |
