Wake Up Your 2026 Sherco 300 SE Factory: Keihin PWK 36 Jetting Guide

The 2026 Sherco 300 SE Factory is a beast, but out of the crate, the Keihin PWK 36 AG carburetor leaves some performance on the table if you aren't near sea level. Today, we are pulling the carb and diving into the dark art of jetting to show you exactly how a few simple swaps can completely wake up this engine. What I'm replacing today: The Idle Jet (Pilot): Fixing the off-idle bog and getting that crisp, instant initial throttle response. The Needle: Tuning the mid-range transition where you spend the vast majority of your time riding on the trails. The Main Jet: Dialing in the wide-open throttle performance so the bike pulls hard and clean all the way to the top. Why Re-Jet? Factory settings are usually a safe compromise for varying global climates and elevations. By taking a few minutes to tune these three specific components, you optimize the air-fuel ratio for your exact elevation and riding style. Getting this right results in a cleaner-running bike, less plug fouling, better fuel economy, and significantly smoother power delivery. It is hands-down the cheapest horsepower and rideability upgrade you can make on any carbureted bike. Don't forget, grabbing your gear and parts through the site gets you entered into the current 90-day bike giveaway. Order your Parts from Rocky Mountain ATV/MC using this link to get those entries: https://www.rockymountainatvmc.com/l/Dirt-Bike-Channel?ref=1017 Never miss another dirt bike giveaway and be entered into a members only drawing every 90 days. https://dirtbikechannel.com/pages/garage