- Eliminates lean spitting and improves performance with custom exhausts, air filters, or high-compression setups
- Comprehensive assortment includes multiple main jet sizes 150-190 and adjustable needles for carb optimization
- Direct fit for Sportster and Big Twin CV carbs, with instructions for easy tuning and installation
The TwinPower Big Twin and XL Jet Kit Assortment for Keihin CV carburetors includes brass jets manufactured for high precision and flow-calibrated fuel delivery. The assortment is designed to help optimize carburetor tuning and fuel flow for compatible applications.
This kit includes multiple main jet sizes from 150 through 190 and adjustable needles. It is intended for Sportster and Big Twin CV carburetors and can help address lean spitting and improve performance when used with custom exhausts, air filters, or high-compression setups. Instructions for tuning and installation are included.
Manufacturer part number: 420407. Vendor part number: 420407. Fitment is for Sportster and Big Twin models equipped with Keihin CV carburetors, subject to the specific vehicle and carburetor configuration.
Features:
- Brass construction: Jets are made of brass for high-precision fuel flow.
- Flow-calibrated: Designed for accurate fuel flow rates.
- Jet assortment: Includes multiple main jet sizes from 150 through 190.
- Adjustable needles: Provides additional carburetor tuning capability.
- Fitment: Designed for Sportster and Big Twin models with Keihin CV carburetors.
- Tuning support: Includes instructions for tuning and installation.
Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: powersports
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1