JB4 Tuner for CLA250 & GLA250 • +60-85whp 2.0T Power Upgrade (2014–2019)

Want more power from your CLA250 or GLA250 without losing daily drivability? The JB4 is the easiest and most effective plug-and-play tuner for the Mercedes 2.0T engine — delivering big gains safely while keeping the car fully reversible. Real Gains on CLA250 & GLA250 +60–85 wheel horsepower on 91–93 octane Stronger mid-range pull and quicker 0-60 times Sharpened throttle response with less lag E85 maps available for even more power ✓ True plug & play • Reversible • Made in USA • 5-Year Warranty Compatible Models Model Years Chassis CLA250 2014–2019 C117 - 2.0 Turbo 4 Cyl GLA250 2015–2019 X156 - 2.0 Turbo 4 Cyl Build Your Package – Add These Popular Upgrades Catless Downpipe Removes restriction for faster spool and extra power. Louder turbo sound. High-Flow Intake Filter Better airflow and throttle response. Easy drop-in upgrade. Upgraded Diverter Valve Stronger and more reliable than stock. Prevents boost leaks under load. Choose Add-ons (Downpipe • Filter • Diverter Valve) + Add JB4 to Cart → Perfect for 2014–2019 CLA250 and GLA250 owners looking for reliable power, better throttle, and easy installation. Works with stock or modified 2.0T engines.