Strongflex / Strong Flex – manufacturer of polyurethane suspension bushings for Honda

Strongflex (also written as Strong Flex) is a Polish manufacturer of polyurethane suspension bushings and components for passenger and light commercial vehicles. Production has been carried out continuously since 2000. In its early years, the company was known on the market as Bikopur, before being rebranded under the Strongflex name.

Strongflex products are designed as a durable and technically advanced alternative to standard OEM rubber suspension parts. Thanks to the use of modern polyurethane elastomers, they offer improved suspension stability, longer service life and high resistance to operating conditions that typically degrade rubber bushings.

Polyurethane suspension bushings and components by Strongflex

The Strongflex range includes a wide selection of polyurethane suspension bushings and mounting components intended for standard road cars, modified vehicles and amateur motorsport applications. These parts replace factory rubber or rubber-metal bushings in suspension points exposed to high loads and repeated dynamic stress.

Strongflex polyurethane bushings are widely used in Honda suspension systems, where precise handling, durability and resistance to material ageing are particularly important — both in daily-driven cars and in vehicles with suspension modifications.

Material and technology – polyurethane instead of rubber

Strongflex products are manufactured using a modern polyurethane elastomer system, offering performance well beyond that of traditional rubber. Resistance to weather conditions, oils, greases, road salt, acids and solvents remains excellent in all hardness variants. The material is specifically selected for suspension applications, where constant load changes and vibration are present.

• high elasticity across the entire hardness range,
• very good resistance to dynamic loads,
• high abrasion resistance,
• stable performance over a wide temperature range,
• high resistance to tearing and cracking,
• excellent resistance to oils, chemicals and environmental factors.

Hardness options – 80 ShA and 90 ShA

The main difference between red, yellow and black/grey Strongflex bushings is material hardness and intended use. Currently, two primary hardness options are available:

• NORMAL version – approx. 80 ShA (red): similar in stiffness to many OEM rubber-metal bushings, while offering significantly higher durability. Recommended for drivers seeking improved stability without sacrificing everyday comfort.
• SPORT / TUNING / RACING version – approx. 90 ShA (yellow): designed for performance-oriented and modified vehicles (e.g. lowered suspension), providing noticeably stiffer and more precise handling at higher speeds.

Important: some Strongflex bushings are available only in 90 ShA because the original OEM rubber bushings in those locations are manufactured from very hard rubber compounds. Installing an 80 ShA bushing in such positions may result in worse handling compared to the original part.

Black / grey bushings are visually closer to OEM rubber parts while retaining the same hardness as their red (80 ShA) or yellow (90 ShA) equivalents. These versions are often identified by the letter “X” in the part number (e.g. 330010AX, 330010BX).

Key benefits of Strongflex polyurethane bushings

• improved suspension stability and more precise vehicle control,
• increased driving safety, especially under dynamic conditions,
• high resistance to oils, road salt and environmental exposure,
• potentially more even tyre wear and extended tyre lifespan,
• lower long-term running costs due to material durability.

Applications – Strongflex polyurethane bushings for Honda vehicles

Strongflex polyurethane bushings are commonly used in Honda vehicles, both as replacements for worn factory rubber components and as part of suspension upgrades. They are suitable for daily driving as well as more performance-focused setups.

Consistent material properties and a wide catalogue allow for precise selection based on vehicle model, axle position and mounting location.

Custom orders and non-standard applications

As a company cooperating with Strongflex for over 15 years, Jdmshop.eu is able to assist with custom orders and non-standard applications that may not be listed in the official Strongflex catalogue.

This includes the possibility of manufacturing polyurethane bushings:

• for Honda models not officially listed in the catalogue,
• for older or rare Honda variants,
• for custom builds, engine swaps and performance projects.

All custom orders are handled individually after technical consultation and specification confirmation.

Warranty – Strongflex polyurethane bushings

Warranty coverage depends on the intended product use:

• 24-month warranty for SPORT (yellow) products,
• lifetime warranty for NORMAL (red) products (excluding motorsport use), calculated from the purchase date.

The warranty is limited to replacement of the purchased bushings only. In case of claims, the manufacturer may request information about vehicle modifications and photographic documentation of the issue.

Strongflex – reviews and comparison with other polyurethane brands

Strongflex products are often compared with other polyurethane suspension brands. Users value them for durability, consistent quality and the availability of multiple hardness options, allowing accurate matching to vehicle setup and driving style.

FAQ – frequently asked questions about Strongflex bushings

Is Strongflex a manufacturer?
Yes. Strongflex is a Polish manufacturer of polyurethane suspension bushings, operating since 2000.

What is the difference between red and yellow Strongflex bushings?
Red bushings are approx. 80 ShA (NORMAL), while yellow bushings are approx. 90 ShA (SPORT). Black/grey versions have the same hardness as their coloured equivalents.

What does the “X” in the part number mean?
In many cases, the letter “X” indicates a black or grey version of the bushing with the same hardness as the red or yellow variant, e.g. 330010AX or 330010BX.

Are Strongflex bushings suitable for daily driving?
Yes. NORMAL (80 ShA) bushings are well suited for daily-driven vehicles, offering a balance between comfort and durability.

Can custom Strongflex bushings be ordered for non-listed Honda models?
In many cases, yes. Thanks to long-term cooperation with the manufacturer, Jdmshop.eu can assist with individual and custom orders after consultation.