K&N Intake System is a direct bolt-on replacement for the stock air clea
There isn’t a rider out there who doesn’t wish for a little extra oomph from their engine when they need to squeeze through traffic or even when accelerating down a freeway on ramp. K&N may have the solution for 2014 – 2015 Harley Sportster 1200 riders with its RK-3943 Intake System.
The 1200 is a version of Harley’s Evolution engine, more commonly referred to as the Evo. It’s an air-cooled, 45-degree, V-twin engine first manufactured for Sportster model in 1986, replacing the iron head Sportster engine. Many consider the Evolution the engine that “saved” Harley-Davidson as the Evolution engine tended not to leak oil, ran cool, and was more durable than its predecessor.
Much of the Evolution engine is made from aluminum to reduce weight compared to a cast iron design, as well as improve cooling efficiency as the large aluminum fins conduct heat better than cast iron. The engine also features a sophisticated Electronic Sequential Port Fuel Injection system that provides excellent drivability and improved fuel economy.
The ECU is a target for modifications for owners, often being the first modification they make to the bike. There are several manufacturers that produce an ECU that plugs into the wiring loom without any permanent modifications in order to enhance performance. To really get the most out of your aftermarket ECU, you need a replacement air filter that flows better than stock. The K&N Intake System has been developed to add horsepower and acceleration to your Harley through an increase of up to 50% more airflow. More air flow is just what your aftermarket performance Fuel Management System needs to work to its full potential.
The K&N Intake System for Harley Sportster 1200s includes a dyno-tuned velocity stack and all necessary mounting hardware
The K&N RK-3943 Intake System has been designed specifically for 2014 and 2015 1200XL engines, and replaces the stock air filter and cleaner backing plate assembly.
The intake system increases power by eliminating the stock OE air cleaner and replacing it with a complete High-Flow Air Intake System. The sturdy, custom aluminum backing plate mounts directly to the throttle body via an aluminum integrated, internal-run breather system. Inside the intake system is a K&N Air Filter feeding a dyno tuned velocity stack, which directs airflow to the engine. Best of all, the entire system fits neatly behind the OE air cleaner cover.
Even if you’re not installing an aftermarket fuel management unit, you can still receive the performance benefits of the K&N RK-3943 High-Flow Air Intake System. It is guaranteed to deliver more horsepower and torque to recent Harley-Davidson XL1200 model motorcycles through increased air flow. In fact, K&N dyno tests show an estimated 6.35 hp increase on an otherwise stock 2015 Harley Sportster Custom.
The key to improved airflow through K&N air filters is that they’re manufactured from several layers of pre-oiled cotton filter media, rather than restrictive paper often found in many replacement filters. K&N filters also provides outstanding filtration to ensure a long engine life for your Harley, established through its own in-house ISO 5011 air filter filtration efficiency test lab, which follows International Standard Organization procedures.
The only maintenance required for a K&N Harley Intake Kit is a service you can do yourself with the help of a K&N Recharger cleaning kit. At intervals of 50,000 miles (or less, depending on how dusty and dirty the conditions are in which you ride) you can easily renew your air filter, and prepare it for another 50,000 miles of riding. Your one K&N air filter is designed to last for the lifetime of your bike, which K&N guarantees will perform for up to 1,000,000 miles or 10 years without requiring replacement. For full details visit the K&N 10-Year/Million Mile Limited Warranty.
You can order the intake system simply by clicking on the RK-3943 as well as order the Air Filter Cleaning Kit 99-5050.
To find additional K&N upgrades for cars, trucks, scooters, motorcycles, motorhomes, or just about anything powered by an engine, use the K&N Search by Vehicle tool. Find an authorized K&N dealer nearby using the K&N Dealer Search.
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2015 HARLEY DAVIDSON XL1200T SUPERLOW 74 CI - All
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2014 HARLEY DAVIDSON XL1200X FORTY-EIGHT 74 CI - All
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