3x MIPA HX4 2K HS EXPRESS HARDENER – 2.5 LITRESProfessional Express Acrylic Hardener | Designed for MIPA CX4 Clearcoat | Fast Curing | Ideal for SMART RepairsPRODUCT DESCRIPTIONMIPA HX4 2K HS Express Hardener is a professional two-component acrylic hardener specially developed for use with MIPA CX4 Express 2K HS Clearcoat Lacquer.Designed as part of MIPA's express automotive refinishing system, HX4 helps achieve exceptionally fast drying and polishing times while maintaining the high-quality finish expected from a professional automotive clearcoat.When mixed with MIPA CX4 at the specified 2:1 clearcoat-to-hardener ratio by volume, HX4 activates the curing process and supports rapid turnaround times for automotive paint repairs.This makes it particularly suitable for SMART repairs, spot repairs, partial vehicle resprays and professional bodyshop refinishing.Under the manufacturer's specified conditions, the CX4 and HX4 system can be ready for polishing after a short drying period, helping reduce workshop processing time and spray booth occupancy.THIS LISTING INCLUDES 1X MIPA HX4 2K HS EXPRESS HARDENER – 2.5 LITRES.CLEARCOAT IS NOT INCLUDED.PRODUCT SPECIFICATIONSBrand: MIPAProduct Name: 2K-HS-Express-Härter HX 4Product Type: 2K Acrylic Express HardenerHardener Grade: Express / Fast CuringContainer Size: 2.5 LitresQuantity: 1Compatible Clearcoat: MIPA 2K-HS-Express-Klarlack CX4Mixing Ratio with CX4: 2:1 by Volume (Clearcoat : Hardener)Application: Professional Automotive RefinishingRecommended Uses: SMART Repairs, Spot Repairs and Partial RespraysKEY FEATURES & BENEFITS✓ Dedicated CX4 Express Hardener – Specifically developed for MIPA CX4 2K HS Express Clearcoat.✓ Rapid Curing Performance – Supports exceptionally short drying times when used under the specified conditions.✓ Fast Polishing Capability – Enables quicker progression to polishing after curing and cooling.✓ Ideal for SMART Repairs – Particularly useful for small-area refinishing and spot repair work.✓ Professional 2K Acrylic System – Designed for professional automotive clearcoat applications.✓ 2:1 Mixing Ratio – Simple preparation using two parts CX4 clearcoat to one part HX4 hardener by volume.✓ Improved Workshop Efficiency – Faster curing can reduce spray booth occupancy and vehicle turnaround times.✓ Flexible Drying Options – Suitable for manufacturer-specified air-drying and heated drying processes.✓ Professional Bodyshop Quality – Intended for automotive painters, repair specialists and refinishing workshops.IDEAL APPLICATIONSMIPA CX4 Express 2K HS ClearcoatSMART automotive repairsSpot repairsPartial vehicle respraysCar body panel refinishingAccident damage repairsProfessional bodyshopsAutomotive spray painting workshopsFast-turnaround vehicle refinishingEXPRESS DRYING PERFORMANCEWhen correctly mixed with MIPA CX4 Express Clearcoat, the CX4/HX4 system offers fast curing and polishing performance.According to the manufacturer's CX4 technical data sheet:At 60°C object temperature: Approximately 5 minutes drying, followed by around 15 minutes cooling before polishing.At 40°C object temperature: Approximately 20 minutes drying, followed by cooling before polishing.At room temperature: Polishing may be possible after approximately 1 hour.Actual results depend on object temperature, coating thickness, application conditions and adherence to the manufacturer's instructions.MIXING RATIO WITH MIPA CX42:1 BY VOLUME2 Parts: MIPA CX4 Express 2K HS Clearcoat1 Part: MIPA HX4 2K HS Express HardenerExample Mixing QuantitiesCX4 Clearcoat HX4 Hardener Total Mixed Volume200ml 100ml 300ml500ml 250ml 750ml1,000ml 500ml 1,500ml5,000ml 2,500ml 7,500mlOne 2.5L container of HX4 is sufficient to mix with 5L of CX4 clearcoat at the specified 2:1 ratio.MIPA CX4 clearcoat is sold separately and is NOT included in this listing.APPLICATION GUIDANCEEnsure the MIPA CX4 clearcoat and the working environment are suitable for application.Measure two parts CX4 clearcoat and one part HX4 hardener by volume.Mix thoroughly according to the manufacturer's technical instructions.Apply using suitable professional spray equipment.Observe the recommended flash-off, drying and curing times.Allow the coating to cool sufficiently before polishing where heated drying is used.Typical pot life of the mixed CX4/HX4 system is approximately 80 minutes at 20°C.Do not mix more material than can be applied within the specified pot life.WHY CHOOSE MIPA HX4 EXPRESS HARDENER?MIPA HX4 is the dedicated hardener for the CX4 Express Clearcoat system, making it a practical choice for professional painters who require rapid curing and efficient repair workflows.Its express curing characteristics help reduce drying time while supporting the finish quality and gloss retention of MIPA CX4.The 2.5-litre pack is conveniently sized for mixing with a 5-litre container of CX4 clearcoat, making it ideal for professional bodyshops and automotive refinishing specialists.PACKAGE CONTENTS1X MIPA HX4 2K HS EXPRESS HARDENER – 2.5 LITRESTOTAL QUANTITY: 2.5 LITRESCX4 CLEARCOAT NOT INCLUDEDIMPORTANT SAFETY INFORMATIONFOR PROFESSIONAL USE ONLYThis product is a two-component automotive coating hardener and may contain hazardous isocyanates.When spraying isocyanate-containing coatings, suitable air-fed respiratory protective equipment is required under UK HSE guidance.Standard cartridge-filter respirators are not an adequate substitute for air-fed breathing equipment during isocyanate spraying.Use only in a properly equipped and ventilated professional spraying environment.Wear appropriate gloves, eye protection and protective clothing.Follow the current MIPA technical data sheet and safety data sheet.Check compatibility before use; HX4 is specified for the MIPA CX4 Express clearcoat system.Keep away from heat, sparks and ignition sources.Store according to the manufacturer's instructions.Packaging and labelling may vary due to manufacturer updates.MIPA HX4 2K HS EXPRESS HARDENER – 2.5LFast Curing | Designed for CX4 | 2:1 Mixing Ratio | Ideal for SMART Repairs | Professional Bodyshop UseThe dedicated express hardener for faster MIPA CX4 automotive clearcoat refinishing.