Moose Offroad 26-1521 Carburetor Rebuild Kit — Beta KTM Husaberg Husqvarna 2003-2010

Moose Offroad — Ethanol-Resistant NBR Rubber, Precision Jetting Components, and Complete Fuel System Restoration

Restore crisp throttle response and eliminate fuel leaks with the Moose Offroad 26-1521 Carburetor Repair Kit. Specifically engineered for the high-performance Keihin FCR carburetors found on 2003-2010 European off-road machines, this kit is the professional solution for a total fuel system refresh. Over time, modern pump fuels with high ethanol content cause standard rubber seals to swell, crack, or dissolve, leading to erratic idling, difficult starting, and poor engine performance. Moose Offroad addresses this by utilizing premium NBR (Nitrile Butadiene Rubber) for all O-rings and gaskets, providing superior resistance to the corrosive effects of ethanol-blended fuels.

Every 26-1521 kit is a comprehensive rebuild solution, including all necessary O-rings, gaskets, jets, and needle valves required to return your carburetor to factory-fresh specifications. Whether you are maintaining a classic Beta 450 RR 4T, a Husaberg FE series, or a KTM EXC-G Racing model, this kit ensures that every internal seal is airtight and fuel-tight. By replacing worn-out components with Moose Offroad’s precision-machined hardware, you eliminate the "hanging idle" and fuel overflow issues that commonly plague older four-stroke carburetors.

• Ethanol-Resistant NBR Rubber: Premium Nitrile rubber gaskets and O-rings designed to withstand modern pump gas without swelling or degrading.
• Comprehensive Repair Kit: Includes all vital internal components: O-rings, gaskets, float needle, and applicable jetting hardware.
• Restore Performance: Eliminates fuel leaks and erratic fueling to return your engine to its optimal power curve and throttle snap.
• High-Precision Machining: Each internal component is manufactured to strict tolerances for a perfect, leak-free interface.
• Broad European Fitment: Precision fitment for Beta, KTM, Husqvarna, and Husaberg models from the 2003-2010 era.

Moto-House MX Pro Tip:

Carburetor maintenance is a precision task. When using the Moose Offroad 26-1521 kit, ensure the carburetor body is thoroughly cleaned with an ultrasonic cleaner or specialized carb spray before reassembly. Pay close attention to the float height—even with new parts, an incorrectly set float can cause bogging or overflow. We recommend documenting your current jetting sizes before starting to ensure your baseline remains consistent. Rebuilding with NBR rubber components is the single best way to ensure your classic Beta or KTM remains reliable despite the lower quality of modern pump fuels.

Technical Specification	Details
Material	NBR (Nitrile) Ethanol-Resistant Rubber
Carburetor Type	Keihin FCR / FCR-MX Style
Kit Contents	Gaskets, O-Rings, Needle Valve, Jets
Fitment Years	2003 - 2010 (US Models)

FAQ Questions

Q) Will this kit work on my European-spec (non-US) bike?
A) These kits are based on US-model carburetor specifications. While many components cross over, always double-check your jet sizes as European models may have different factory jetting requirements.

Does this kit include the accelerator pump diaphragm?
A) Most Moose repair kits include the major bowl gaskets and O-rings; however, specialized accelerator pump kits are often sold separately. Check the kit contents for specific hardware inclusion.

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