KLX125: Fuel and Intake

The EJK evolved out of the need to address the ever-increasing complexity of factory fuel injection. For the newcomer to the market or professionals wanting an easier method for tuning fuel injection, the EJK is a customizable solution for the rider that wants to take control of their tuning needs.

This unit is a piggy-back EFI controller because it does not replace the stock ECU, but rather monitors the signals to the injectors and makes fuel adjustments based on the mode settings. The GEN 3 has a push button interface allowing access up to 6 different modes to allow for quick fine tuning by the end user without needing a computer.

Key Features:

• No computer or dyno needed!
• Plug and play, simple to install, base settings preset
• Unique load based technology
• Full range tunability available
• Does NOT interfere with stock ECU operation
• Simple push button adjustment interface
• Water-resistant 
• 2-Year warranty
• Compact size - 2.2" H x 3.4" W x 0.5" D

Tune your stock carburetor for better power and response, easier starting and quicker warm up. Mikuni main and pilot jets and adjustable needle.

• #20 and #22.5 pilot jets
• #107.5 and #110 main jets
• 3 position adjustable needle

Genuine Keihin spring, washer, and oring for the fuel screw of FCR and FCR MX carbs.

Just the parts…
Fuel screw spring, washer, o-ring (fuel screw not included)

• Increased air flow over the stock air filter
• Designed to increase horsepower and throttle response
• Designed to fit inside the factory air box
• Larger surface area over foam filters which offers longer service intervals in dusty conditions
• Four layers of premium cotton gauze provides outstanding filtration
• Washable & re-usable, never wears out
• One filter will last the lifetime of your bike

Sold in 6 packs

• Compatible with many air filter boxes. Easy to install by drilling 1’’ holes in airbox housing and snap fitting vents in.
• May be cleaned and re-oiled
• More air flow allows you to add more fuel to your intake mixture, increasing performance.
• 1" Diameter

Not legal for use on pollution controlled vehicles in the state of California.

Quick release one-piece clamps that saves space. These are great for fuel lines, controlling wires, and can be used many times.

Comes with 4 each of 8mm, 9mm 10mm, and 12mm.

No special tools needed, from Helix Racing.