Moto Tassinari Vforce4 Valve System V4R85A for KTM 85 SX and Husqvarna TC 85

Moto Tassinari has extracted more power and more performance from our already proven Vforce3 reed valve system design for the 85cc market, by offering the all-new Vforce3i with integrated intake boot (included on CR, RM & YZ models only). the Vforce3i shares many of the same features as it’s legendary big brother, along with these additional unique features

Upgrade the intake performance of your 85cc motocross motorcycle with the Moto Tassinari Vforce4 Valve System, manufacturer part number V4R85A. Designed for select KTM and Husqvarna 85cc models, this reed valve system is engineered to improve airflow, throttle response, and overall engine performance. The system builds on Moto Tassinari’s proven Vforce reed valve technology with a reed cage and intake design developed specifically for high-performance two-stroke applications.

The V4R85A features a straight-shot intake path that helps deliver a more direct route into the engine cases, supporting more consistent fuel and air distribution. Redesigned reed stops help stabilize the reed petals and control their opening, while the shorter reed cage allows the use of lighter reed petals for improved response and performance. The integrated intake boot is designed for proper system integration and dependable fitment on compatible applications.

This Moto Tassinari valve system fits select 2014–2019 Husqvarna TC 85 models with 17/14-inch wheels and select 2003 and 2017–2019 KTM 85 SX models with 17/14-inch wheels. Verify the motorcycle year, model, and wheel configuration before installation. The manufacturer part number and vendor part number are both V4R85A, making it easy to identify the correct replacement or performance upgrade for your application.

Features:

• Straight-shot intake design: Provides a direct path into the engine cases for more even fuel and air distribution.
• Reed stops: Redesigned stops improve reed petal stability and help control petal opening.
• Reed petals: A shorter reed cage accommodates lighter reed petals for sharper overall engine response.
• Integrated intake boot: Custom boot design supports proper intake alignment and system integration on compatible models.
• Application-specific performance: Engineered for select KTM 85 SX and Husqvarna TC 85 85cc two-stroke motorcycles.
• Fitment: Fits 2014–2019 Husqvarna TC 85 and 2003, 2017–2019 KTM 85 SX models with 17/14-inch wheels.

Fitment:
2003 KTM 85 SX (17/14)
2004 KTM 105 SX
2004 KTM 85 SX (17/14)
2005 KTM 105 SX
2005 KTM 85 SX (17/14)
2006 KTM 105 SX
2006 KTM 85 SX (17/14)
2007 KTM 105 SX
2007 KTM 85 SX (17/14)
2008 KTM 105 SX
2008 KTM 105 XC
2008 KTM 85 SX (17/14)
2008 KTM 85 XC
2009 KTM 105 SX
2009 KTM 105 XC
2009 KTM 85 SX (17/14)
2009 KTM 85 XC
2010 KTM 105 SX
2010 KTM 105 XC
2010 KTM 85 SX (17/14)
2011 KTM 105 SX
2011 KTM 85 SX (17/14)
2012 KTM 105 SX
2012 KTM 85 SX (17/14)
2013 KTM 105 SX
2013 KTM 85 SX (17/14)
2014 Husqvarna TC 85 (17/14)
2014 KTM 105 SX
2014 KTM 85 SX (17/14)
2015 Husqvarna TC 85 (17/14)
2015 KTM 105 SX
2015 KTM 85 SX (17/14)
2016 Husqvarna TC 85 (17/14)
2016 KTM 105 SX
2016 KTM 85 SX (17/14)
2017 Husqvarna TC 85 (17/14)
2017 KTM 105 SX
2017 KTM 85 SX (17/14)
2018 Husqvarna TC 85 (17/14)
2018 KTM 105 SX
2018 KTM 85 SX (17/14)
2019 Husqvarna TC 85 (17/14)
2019 KTM 105 SX
2019 KTM 85 SX (17/14)
2020 Husqvarna TC 85 (17/14)
2020 KTM 85 SX (17/14)
2021 Husqvarna TC 85 (17/14)
2021 KTM 85 SX (17/14)
2022 Husqvarna TC 85 (17/14)
2022 KTM 85 SX (17/14)
2023 Gas-Gas MC 85 17/14
2023 KTM 85 SX (17/14)
2024 Gas-Gas MC 85 17/14
2024 KTM 85 SX (17/14)