The Moto Tassinari Vforce4X Valve System, manufacturer part number V4X26AM, is designed to improve intake efficiency, throttle response, and overall engine performance on select KTM and GasGas off-road motorcycles. Building on Moto Tassinari’s proven Vforce reed valve technology, this performance-focused system is engineered to support more consistent airflow and stronger power delivery across the operating range.
Fitment: This valve system fits 2023 KTM 125 SX, 2023 KTM 125 XC, 2023 KTM 300 SX, and 2023 KTM 300 XC models. It also fits 2024 KTM 125 SX, 2024 KTM 125 XC, 2024 KTM 300 SX, and 2024 KTM 300 XC motorcycles, along with 2024 GasGas EX 250 and 2024 GasGas EX 300 models. Confirm model-year compatibility before installation, as fitment may vary by application.
The Vforce4X system uses a redesigned reed cage and reed assembly to help optimize intake flow while maintaining reliable operation under demanding riding conditions. Its engineered components are intended for riders and technicians seeking improved performance from compatible two-stroke engines without compromising the integrated function of the intake system. The Moto Tassinari Vforce4X Valve System is supplied as a direct-performance replacement for the original reed valve assembly on applicable motorcycles.
Install the system according to the motorcycle manufacturer’s service procedures and Moto Tassinari installation guidance. Proper sealing, fastener torque, and intake alignment are essential for dependable performance. With its application-specific design and established Moto Tassinari engineering, part V4X26AM is a suitable upgrade for compatible KTM and GasGas 125–300cc two-stroke models.
Features:
- Performance Reed Valve System: Helps improve intake efficiency, throttle response, and power delivery on compatible two-stroke motorcycles.
- Vforce4X Design: Builds on Moto Tassinari’s proven reed valve technology for demanding off-road applications.
- Optimized Airflow: Engineered reed cage and reed components support consistent airflow through the intake system.
- Application-Specific Fit: Designed for select KTM and GasGas 125–300cc models from the listed model years.
- Direct Replacement: Replaces the original reed valve assembly when properly matched to the motorcycle application.
- Brand: Moto Tassinari.
- Manufacturer Part Number: V4X26AM.
- Vendor Part Number: V4X26AM.
Fitment:
2019 Husqvarna TE 150
2019 Husqvarna TE 250i
2019 Husqvarna TE 300i
2020 Husqvarna TE 150i
2020 Husqvarna TE 250i
2020 Husqvarna TE 300i
2020 Husqvarna TX 300i
2021 Husqvarna TE 150i
2021 Husqvarna TE 250i
2021 Husqvarna TE 300i
2021 Husqvarna TX 300i
2022 Husqvarna TE 150i
2022 Husqvarna TE 250i
2022 Husqvarna TE 300i
2022 Husqvarna TX 300i
2023 Husqvarna TC 125
2023 Husqvarna TC 250
2023 Husqvarna TE 150i
2023 Husqvarna TE 250i
2023 Husqvarna TE 300i
2023 Husqvarna TX 300i
2023 KTM 125 SX
2023 KTM 125 XC
2023 KTM 150 SX
2023 KTM 250 SX
2023 KTM 250 XC
2023 KTM 300 SX
2023 KTM 300 XC
2024 Gas-Gas EX 250
2024 Gas-Gas EX 300
2024 Gas-Gas Mc 125
2024 Gas-Gas Mc 250
2024 Husqvarna TC 125
2024 Husqvarna TC 250
2024 Husqvarna TX 300i
2024 KTM 125 SX
2024 KTM 125 XC
2024 KTM 150 SX
2024 KTM 250 SX
2024 KTM 250 XC
2024 KTM 300 SX
2024 KTM 300 XC