Tail Gunner Checking in! This month I take a look at LA Choppers Big Air Kit (round), for either EFI or Carb bikes. The kit comes complete with everything you need for an easy install and an estimated 10% HP increase. The Big air kit has a built in breather, so no hose’s to fool with. The entire kit is powder coated black, then the design is machined in leaving the shinny billet to show through. There are many designs to choose from, you can see them all at lachoppers.com. Installation is straight forward, simple as one two three!
Official LA Choppers Installation Instructions:
1. First you must remove your stock air cleaner assembly and backing plate via the instructions in your service manual. The carburetor flange and threaded bosses into the cylinder heads should then be cleaned. Remove the backing on the supplied gasket and apply to the back of the large chrome backing plate.
2. Mount the large backing plate to the cylinder heads via the supplied spacers and breather bolts. Spacers have a lip that helps them seat flush in the backing plate. Be sure to use Loctite® when securing the bolts. For Evo engines, use the larger 1/2-13 breather bolts. For twin cam engines, use the 3/8-16 breather bolts. Tighten breather bolts lightly allowing minimal play in the backing plate for ease with the next step.
3. Install the three supplied standoffs w/studs through the backing plate and into the carburetor flange. Apply Loctite® to the threaded studs on the standoffs and secure finger tight (tighten down as much as possible by hand, they will be torqued in the next step). Secure the breather bolts.
4. Next, install the seal plates that fit into the backing plates, sealing off the air/oil channels from the breather bolts. Place filter over seal plates, and install cinch plate with supplied black flat head bolts sealing the air filter and seal plates to the backing plate. Be sure to apply Loctite® to the three flat head bolts. Tighten the bolts.
5. Lastly, place the decorative face plate plate into the cinch plate and install the (3) 6-32×3/16″ set screws. These screws will both attach and allow you to center the decorative plate. Clean off the cover and around the air cleaner assembly. Installation is complete. Be sure to clean and re-oil your air filter on a regular basis. Also, be sure to re-check bolts after riding to ensure air cleaner assembly remains secure.
The big air kit is available for all Harley Davidson models and many metric bikes as well.
Give the guy’s at LA Choppers a call, they can hook you up! Tail Gunner checking out, till next time!
