Honda XR650L TM40 Flatslide Pumper Carb KIT

Mikuni TM40-6 Pumper Carb Kit – Fits Honda XR600 / XR650

Go fast, the easy way. This Mikuni TM40-6 Pumper Carburetor Kit transforms the performance of your Honda XR600 or XR650, eliminating hard starts, flat spots, and throttle hesitation. Designed for a precise fit to the stock airbox and intake manifold, this kit delivers instant throttle response, increased torque, and up to 25% more horsepower—proven through real-world dyno testing.

Complete Performance Kit Includes:

• Genuine Mikuni TM40-6 Flatslide Pumper Carburetor

• Pre-installed silver anodized airbox adapter

• Pre-installed engine outlet spigot adapter

• Throttle cables and 1/4-turn quick action throttle

• Cable choke (installed) and optional knob choke included

• Main and pilot jets for initial setup and fine tuning

Tuning & Fitment Notes: This carb kit is pre-configured for easy installation on Honda XR600 and XR650 models, using your OEM airbox and manifold flange. The included adapters are pre-installed for convenience and accuracy.

We provide a range of jets to support fine-tuning based on:

• Fuel type and octane rating

• Elevation and climate

• Engine mods such as cams, exhaust systems, and porting

Proper jetting is critical for peak performance—this kit makes it easy to dial in your setup.

Key Benefits:

• Dramatic improvement in throttle response and rideability

• Smoother power delivery across the rev range

• Enhanced torque and acceleration

• Eliminates bogging, flat spots, and cold-start issues

• Backed by Mikuni's proven performance and durability

Upgrade Your XR Today Whether you’re riding trails, dunes, or backroads, the TM40 pumper carb kit brings your XR600 or XR650 to life. Say goodbye to outdated stock carbs and unleash your bike’s full potential.