2003 YAMAHA V STAR 1100 XVS1100 HYPERCHARGER AIR INTAKE SYSTEM 04 Yamaha V-Star XVS 650 Air Cleaner Intake KURYAKYN HYPERCHARGER Kawasaki 04-10 VN2000 06-10 VN2000 Classic Show Chrome Air Cleaner Cover 71-116 Honda CR250R Fuel Tank / Radiator Shroud Set with Hardware. Yamaha V-Star 650 XVS650 Virago Air Box Filter Cleaner Cover Chrome HARLEY DAVIDSON EVOLUTION SCREAMIN EAGLE AIR CLEANER INSERT Custom Harley S&S Dual Air Intake Induction Touring Harley Davidson Road King Sequential Port Injection Air Filter Cover YAMAHA R1 100% CARBON FIBRE FRONT FUEL TANK COVER IN GLOSS 2009 - 2014 14B Honda Z50 Z50R Z50RD Z 50 air filter assembly 04 - 06 YAMAHA YZF R1 YZF-R1 OEM LEFT & RIGHT INNER FILLER RAM AIR COVERS OS KAWASAKI ZX ZX6 ZX6R 00-02 ZZR600 05-08 FRONT RAM AIR DUCT COWL SCOOP 2006-2013 KTM 125 144 150 SX XC OEM VForce 3 Reed Valve (Stock Intake V-Force) 02-05 Kawasaki Ninja Zx12r Oem Right Front Duct Cover Panel Cowl 11 - 15 SUZUKI GSXR 600 750 RAM AIR COVER PANEL COWL FRONT DUCT LEFT

Custom Harley Black Chrome S&S Teardrop Style Air Cleaner Cover Ducati MultiStrada 1200 Pikes Peak Carbon Right Side Air Intake * New in Box * 2013 Suzuki GSXR1000 GSXR 1000 OEM Front Lower Ram Air Cover Grill Fairing Cowl Genuine Harley Davidson Chopper Bobber 8" Chrome Air Cleaner Cover 1999 YAMAHA YZF R1 LEFT RIGHT FRONT DUCT COVER PANEL COWL GENUINE HARLEY 2013 DYNA STREET BOB BLACK AIR CLEANER COVER SCREAMIN EAGLE 2008+ KAWASAKI ZX ZX6 ZX6R 00-02 ZZR600 05-08 RAM AIR DUCT COWL PLASTIC COVERS SET Honda VTX1300 VTX1800 VTX 1300 1800 Show Chrome Air Cleaner Cover 55-108 RSR Moto Ducati 1198 1098 848 100% Carbon Fibre Ram Air Intake Tubes Covers 88 Yamaha Virago XV 1100 Left Upper Emissions Chrome Side Cover ~FastFreeShip~ Ducati Panigale Carbon Fiber Air Duct Covers 96900412A Yamaha Roadstar Road Star Free Spirit Show Chrome Air Cleaner Cover 62-107 06-07 SUZUKI GSXR 600 750 RAM AIR COVER PANEL COWL FRONT DUCT 97-07 YAMAHA YZF600R LEFT & RIGHT FRONT DUCT COVER PANEL COWL FAIRINGS OEM

04-05 Suzuki GSXR 600 GSXR600 Right Ram Air Intake Duct Rubber Trim Spacer HARLEY-DAVIDSON 29515-99 SCREAMIN' EAGLE INTAKE MANIFOLD Honda VT750 Aero Phantom R/S Spirit Shadow Show Chrome Air Cleaner Cover 53-425 Honda CB750F CB900F CB1100F Side Cover Set - 1979-1983 - Left & Right Panels YAMAHA R1 100% CARBON FIBRE SIDE TANK PANELS / INFILLS IN GLOSS 2009 - 2014 14B YAMAHA R1 R1M 100% CARBON FIBRE FRONT TANK COVER IN GLOSS TWILL 2015 - 2016 BLACK S&S AIR CLEANER TEARDROP COVER INSERT E/G SERIES HARLEY USA MADE Pro-One Performance Millennium Air Cleaner Cover Harley FLHX FLHR FLHT FXSTC Kuryakyn Cover F/Wolo Bad Boy Air Horn, #7732, Sold Each 08 - 14 GSX1300R HAYABUSA OEM LEFT & RIGHT RAM AIR DUCT COVERS HB28 09 Yamaha V-Star XV250 Carb Carburetor w Choke Cable GOOD Arlen Ness Outer Cover for Billet Sucker & Big Sucker Stage I Black 18-761 B11 KAWASAKI VN1500N VULCAN CLASSIC 1500 RIGHT AIR BREATHER CLEANER # 11011-0021 KAWASAKI NINJA ZX ZX6 ZX6R ZX636 636 05-06 RAM AIR DUCTS COWL COVERS SET

DUCATI 748 / 916 / 996 / 998 CARBON FIBRE AIR INTAKE DUCT COVERS New Vance & Hines VO2 Naked Stage 1 Air Cleaner Intake 2014-2016 Harley Touring GENUINE HARLEY CVO DYNA 110" AIR CLEANER INSERT SCREAMIN EAGLEair duct cleaning vienna va Show Chrome 62-107 Air Cleaner Coveramerican air duct cleaning roswell ga SHOW CHROME 62-107 AIR CLEANER COVER 1999-2012 YAMAHA XV1600/1700 ROAD STARair duct cleaning logan utah BMW R NINE T R9T CAFE RACER R1200 GS POTENTIOMETER COVER THROTTLE SENSOR GUARD RSR Moto Ducati 749 999 100% Carbon Fibre Air Duct Tube Covers“How to get more power” is one of the most frequently asked question received about improving a Harley’s performance. Some people are looking for more “get up and go” from their stock engines, while others are looking for higher dyno numbers.

For those who have a stock or mildly modified engine the answer is to move up to the next “stage”… or a Stage 1 upgrade kit to be more exact. Before dragging out the catalogs and bolting on every gizmo claiming to make your ride go faster let’s start with the basics of a Stage 1 upgrade. You’ve probably heard terms such as Stage 1, Stage 2, etc. Now depending on who you ask, a Stage 1 upgrade could be anything from an exhaust upgrade to a new carburetor. I’m going to base the term “Stage 1″ on what the motor company typically terms for this upgrade. With that said, a Stage 1 upgrade consists of the following: There is probably no greater beginning upgrade you can make than a Stage One which is entirely a bolt-on procedure. If you want you can take this upgrade one step at a time however, I recommend going in the order listed above if not all at once.This is the simplest upgrade to perform for most Harley owners. Depending on your budget this ranges from changing the air cleaner to a K&N or other element, to installing higher end air cleaner assemblies like Forcewinders and Hyperchargers.

At minimum you need to let your engine breath by changing the stock air cleaner. You don’t have to spend a fortune but pick something that fits your bike well. If your plan is to keep the look of your current cover assembly go with Screamin’ Eagle or Arlen Ness “Big Sucker” assemblies. These allow you to use your stock cover but the difference over stock is amazing.As with the air cleaner this upgrade can be simple or extreme. Many choose to keep their stock pipes and go with slip-on mufflers. These are easy to install, maintains a stock look, and adds plenty of performance. Popular slip-on models include HD Screamin’ Eagle II, Cycle Shack, Bubs, and Khrome Werks to name a few. My favorites are the ones from Khrome Werks and Python, but the others are just as good. If your budget is slim (join the club) then try buying used like on Ebay. There you will find many models from people who are upgrading to full exhaust systems or another flavor of the month. I’ve found the best deals on slip-on mufflers on Ebay that were sometimes less than HALF of what the item would cost new.

To read more on other exhaust systems check out the  Harley Performance Exhaust page.Once your engine is breathing it’s going to need to do a better job at providing a stable fuel mixture. Your carburetor or EFI will need to be corrected to compensate for how differently the engine now breaths. On carbureted models this means  rejetting. This is a simple operation that is explained in detail on our site under Carb Jetting. Various kits are available to recalibrate the carburetor including those offered by Dynojet, Yost, and the  Stage 1 Carb Kit offered here. EFI models are another story. Fuel injected models use a preprogrammed map to instruct how much fuel is to be delivered. Since you have changed the way the engine breaths, those instructions may not supply the proper stable fuel mixture under all conditions. Granted your bike will still run, but the only way you are going to get the most out of your EFI bike is to have it remapped by a qualified shop. There are simple ways to do this yourself using devices like the  Power Commander , which will be detailed in a future article.

I placed a ” ” next to this last item because under certain circumstances you can go without this upgrade and still accomplish a Stage 1 upgrade. Particularly with Twin Cam models, which already use a single fire ignition. Aftermarket TC88 ignitions offer higher rev limits and altered advance curves but unless you plan on hitting 6200 RPM (you shouldn’t anyway!) then stock is just fine. Evo and some earlier models have Dual-fire ignitions and can really benefit from the single-fire upgrade. Dynatek’s very popular DYNA 2000 ignition was previously reviewed (see the article, Single-Fire Ignition) and is an excellent performance upgrade for Evo engines. That’s really the core to performing a Stage 1 upgrade. The next step is Stage 2 which includes a cam upgrade, and Stage 3 (and 4 and beyond) include upgrading your heads, big bore cylinders, and stroker kits. Future articles and reviews are in the works to talk more about these stages and upgrades. Return to Harley Performance Tech Tips from Stage 1 Upgrades for more tech tips and articles.