Motorcycle shock absorber conversion round head kit with aluminium alloy construction in 16mm size, suitable for Harley-Davidson and custom bike modification projects with eight finish options including standard and extended lengths
Aluminium Alloy Motorcycle Shock Conversion Round Head in 16mm Size

This shock absorber conversion round head is a dedicated component for motorcycle enthusiasts and builders modifying their bike's rear suspension. Its primary function is to replace an existing shock mounting point, converting the setup to accept a raised, round-headed shock absorber. This is a common requirement in custom bike building, particularly for choppers, bobbers, and certain Harley-Davidson models where altering the bike's ride height or frame geometry is desired. The part provides a solid, machined interface between the shock and the motorcycle's swingarm or frame.
Features and Construction

The round head is defined by its material choice, precise sizing, and the range of available variants to suit different build requirements. It is a single-purpose component designed for a specific mechanical function within the motorcycle's suspension system.
Material and Build
Constructed from aluminium alloy, this round head offers a practical balance between necessary strength for a suspension component and a reduction in unsprung weight compared to steel. The machining process creates a clean, round head with a central mounting hole sized for a 16mm shock absorber eyelet or bolt. The finish options of black or silver provide a choice for matching the bike's aesthetic, with the 'Boutique' designation suggesting a potentially finer surface finish compared to the standard option.
Size and Practical Fit
The core diameter of the component is 16mm. The critical differentiator among the eight variants is the extension length. The standard lower round head maintains the original shock mounting position. The +2cm and +4cm lower round head variants are extended downwards, effectively lowering the shock's mounting point on the swingarm or frame. This alteration directly changes the motorcycle's ride height and rear suspension geometry, allowing for significant visual and handling adjustments common in customisation.
Uses and Placement

This component is integral to a specific type of motorcycle modification and is not a universal or general-purpose part. Its use requires mechanical knowledge and an understanding of motorcycle suspension systems.
Event or Professional Use
For professional bike builders or workshops specialising in custom Harley-Davidson, chopper, or bobber projects, this round head is a catalogue item. It allows for precise control over a bike's final stance and ground clearance. The availability of multiple extension lengths (+2cm, +4cm) provides tools to achieve specific looks or to correct geometry after other frame modifications. Choosing between the standard and 'Boutique' finish allows for tailoring the build's quality level to the customer's budget and expectations.
Everyday Home Use
For the advanced home mechanic undertaking a custom build or a suspension refresh, this part enables a DIY approach to modifying bike height. It is crucial to select the correct variant: the standard round head for a direct replacement, or an extended version to lower the rear end. This modification can dramatically alter the bike's handling characteristics, so it should be undertaken with caution, preferably alongside research or consultation with experienced builders to ensure safety and desired outcomes.
Benefits and Buying Value

The value of this component lies in its specific function, material quality, and the options it provides for customisation, rather than in broad, unsupported claims about performance or durability.
Reuse and Low Maintenance
As a solid metal machining, the round head itself requires no maintenance. Its value is in enabling a modified suspension setup that is then maintained as a whole system (shocks, linkages, etc.). The aluminium construction is corrosion-resistant under normal conditions, contributing to the longevity of the installed part. By offering a dedicated conversion solution, it can simplify a modification that might otherwise require complex custom fabrication.
Why Choose This Product
This product addresses a very specific niche in motorcycle modification. The key reason to choose it is if your project requires converting a shock mounting point to a raised round head configuration. The 16mm size is a standard fitting for many applications. The range of eight variants allows you to select based on the exact amount of lowering desired (+0cm, +2cm, +4cm), your preferred colour (black or silver), and your chosen finish level. It provides a ready-made solution, saving time and effort compared to manufacturing a custom part.

