Reed Valve Spacer 4 mm – KTM 85SX (2004‑2024) / Husqvarna TC85 (2014‑2024) / GASGAS MC85 (2021‑2024)

The VHM S37004 reed‑valve spacer is engineered to deliver a measurable performance advantage for KTM 85SX (2004‑2024), Husqvarna TC85 (2014‑2024) and GASGAS MC85 (2021‑2024) models. By inserting a 4 mm thick gold‑colored spacer between the reed‑valve assembly and crankcase, the effective crankcase volume is increased. This modification enhances airflow dynamics, optimizes the fresh‑charge environment, and improves throttle response throughout the rev‑range. Ideal for competitive motocross or tuning applications, the S37004 spacer aligns with VHM’s high‑quality standards and is plug‑compatible with the original mounting interface. Whether you’re rebuilding for race use or upgrading for better responsiveness, this spacer offers a precision, reliable solution backed by VHM’s parts‑finder listing.

• Complete spacer precisely 4 mm thick for optimized crankcase volume. 

• Compatible with KTM 85SX (2004‑2024), Husqvarna TC85 (2014‑2024) and GASGAS MC85 (2021‑2024) — broad fitment range. 

• Manufactured by VHM Netherlands in a gold‑finished design for durability and performance alignment. 

• Enhances engine responsiveness and power‑delivery by improving internal airflow conditions.

• Ideal upgrade for competitive use, rebuilds or performance tuning of modern 85 cc motocross machines.