Strongflex 081803B rear beam bush – Honda Civic 8 / CR-Z / Insight / Jazz

Strongflex rear beam bush 081803B – polyurethane 80ShA

The Strongflex 081803B rear beam bush replaces the original rubber bush in the rear axle beam, improving vehicle stability and rear axle control. The 80ShA hardness offers a good balance between precision and comfort – a suitable choice for a daily driven car, dynamic road driving and occasional track use.

Applications – which models use the 081803B bush?

Fits the following vehicles:

• Honda CR-Z (2010–2016)
• Honda City V (2008–2013)
• Honda Civic VIII (2006–2012) Hatchback FK / FN / FN2 Type R
• Honda Insight II (2009–2014)
• Honda Jazz III (2008–2015)

Replaces the following OEM numbers:

• 42100-SMG-E05
• 42100-SMG-E06
• 42100-SMT-E03
• 42100-SMT-E04

Key advantages of the Strongflex polyurethane rear beam bush

• Better rear axle control – reduces unwanted movement and rear end “float”.
• More stable suspension geometry – helps to maintain toe and alignment under load.
• Higher durability than OEM rubber – very good resistance to ageing, road salt, oil and fuel.
• More predictable handling – especially noticeable during dynamic driving and sudden weight transfer.

Technical data – Strongflex 081803B

• Part number: 081803B
• Name: rear beam bush
• Position: rear axle beam (rear axle)
• Hardness: 80ShA
• Material: polyurethane (PUR/PU)
• Quantity required per car: 2
• Pieces in package: 1

Installation and additional information

The bush is installed in the rear axle beam. Due to the way it is pressed in, we recommend installation in a professional workshop equipped with proper tools for suspension bush work.

Each Strongflex bush is supplied with dedicated assembly grease. It makes installation easier and ensures correct operation of the polyurethane during use.

FAQ – frequently asked questions about Strongflex 081803B

Does the 80ShA hardness significantly reduce comfort?
Compared with a worn OEM rubber bush the stiffness will be higher, but at 80ShA the car remains perfectly usable on the street. The main difference you will notice is a more stable rear end and more precise response from the chassis.

Is this bush only for Civic VIII?
No. The same bush is also used in CR-Z, City V, Insight II and Jazz III, as shown by the OEM part numbers listed above.

Is a press required for installation?
In most cases yes – the bush works in the rear beam, so removing the old bush and pressing in the new polyurethane insert is best done with a press or suitable tooling in a workshop familiar with suspension work.