HiQ Urethane Medium Thinner 4L*4EA (DR-421WS)

Professional-grade urethane thinner designed for consistent flow, smooth application, and reliable gloss control.

HiQ Urethane Medium Thinner DR-421WS (MR-20) is formulated for use with automotive basecoats, clearcoats, and 2K topcoats. It provides balanced evaporation for stable spray conditions, making it suitable for a wide range of temperatures and workshop environments.

Key Benefits

• Compatible with basecoats, clearcoats, and 2K topcoats
• Medium drying speed for controlled flow and reduced defects
• Supports even levelling and consistent gloss finish
• Ideal for professional body shops and general automotive refinishing

Product Type

• Urethane Thinner / Reducer
• Internal product code: DR-421WS (MR-20)
• Drying speed: Medium

Application Notes

• Use according to paint system manufacturer’s recommendations
• Available in Slow / Medium / Fast drying variants