Bilstein 35-347835 B6 Rear Strut 2005-2012 Porsche Boxster Cayman 987 w/o PASM

Vehicle Fitment

• 2005-2012 Porsche Boxster (Base - RWD, 2.7L H6 / 2.9L H6)
• 2005-2008 Porsche Boxster S (RWD, 3.2L H6 / 3.4L H6)
• 2009-2012 Porsche Boxster S (RWD, 3.4L H6)
• 2011-2012 Porsche Boxster Spyder (RWD, 3.4L H6 - without PASM only)
• 2006-2012 Porsche Cayman (Base - RWD, 2.7L H6 / 2.9L H6)
• 2006-2012 Porsche Cayman S (RWD, 3.4L H6)
• 2012 Porsche Cayman R (RWD, 3.4L H6 - without PASM only)

Fitment Notes

• Does NOT fit any Porsche Boxster or Cayman equipped with PASM (Porsche Active Suspension Management, factory option I475) - vehicles with PASM require a dedicated DampTronic-compatible strut assembly.
• Does NOT fit the 2008 Porsche Boxster RS60 Spyder - PASM was standard equipment on that model.
• Fits both 987.1 (2005-2008) and 987.2 (2009-2012) generations - rear suspension geometry is shared across both sub-generations.
• Rear position only - sold as a single unit; fits left or right side. Two units required for a complete rear installation.
• Designed for use with OE factory ride-height springs - not intended for lowered or coilover applications (see Bilstein B8 for lowered setups).
• Wheel alignment is recommended after strut replacement to restore proper suspension geometry.

Features

• Bilstein B6 Performance valving delivers a noticeably sportier and more responsive damping character than the factory OE strut, with improved cornering control and body roll resistance - while retaining OE ride height and factory spring compatibility.
• Monotube gas-pressure design provides consistent, fade-free damping across the full suspension travel range and under all driving conditions.
• Application-specific valve settings developed and tuned for the mid-engine 987/987.2 platform, optimizing the car's natural balance and handling precision.
• Velocity-sensitive digressive piston reacts automatically to road inputs - offering compliant behavior over small bumps and firm control under aggressive cornering or braking loads.
• High-pressure nitrogen gas charge eliminates oil aeration and maintains consistent damping performance in all orientations and under sustained use.
• Direct-fit OE-style replacement - installs using factory mounting hardware with no modifications required.
• Rigorously tested to meet or exceed original equipment standards - the same engineering commitment Bilstein applies to its OE Porsche supply contracts.
• Compatible with OE springs, standard aftermarket springs, and Eibach or H&R lowering springs where ride-height difference is modest - consult Bilstein's application guide for spring compatibility.
• Noticeable improvement in directional stability, high-speed composure, and crosswind resistance compared to worn or stock-equivalent struts.
• Backed by Bilstein's lifetime limited warranty for the original purchaser against defects in materials and workmanship.

Specifications

• Part Number: 35-347835
• Series: B6 Performance - Monotube Strut Assembly
• Position: Rear (sold individually - fits left or right side)
• Design: Monotube gas-pressure strut
• Ride Height: Stock / OE ride height (no lowering)
• PASM Compatibility: Not compatible - standard suspension only
• Platform: Porsche 987 / 987.2 (Boxster and Cayman)
• Gas Charge: High-pressure nitrogen monotube
• Spring Compatibility: OE factory springs (sold separately)
• Warranty: Lifetime limited (B6 series, original purchaser)

Included Components

• 1x Bilstein B6 Performance Rear Strut Assembly (35-347835)

Product Description

The Bilstein 35-347835 is a B6 Performance rear strut assembly engineered specifically for the 2005-2012 Porsche Boxster and 2006-2012 Porsche Cayman (987 and 987.2 platforms) equipped with standard suspension - meaning no PASM (Porsche Active Suspension Management). As the step above Bilstein's own B4 OE replacement unit, the B6 Performance delivers a meaningfully sportier damping character: tighter response to cornering loads, better body control through fast direction changes, and improved high-speed composure, while maintaining stock ride height and full compatibility with the factory coil spring. This is the ideal upgrade for a 987 owner who wants to sharpen the car's dynamics without lowering it or altering its fundamental geometry.

The strut is built around Bilstein's signature monotube gas-pressure design with a velocity-sensitive digressive piston and high-pressure nitrogen charge. The digressive piston tuning is calibrated for the 987's mid-engine architecture: compliant enough to absorb road imperfections at low suspension speeds, and progressively firmer as cornering, braking, or rough surface inputs increase. This translates to improved traction, more precise steering feedback, and a reduction in the body roll and float that worn factory struts tend to develop over time. Bilstein's OE relationship with Porsche - the factory Porsche struts themselves are often sourced from Bilstein - means the B6 valve calibration is informed by deep platform knowledge rather than generic performance mapping.

This strut fits all standard-suspension 987 Boxster variants from 2005 to 2012, including the Base, Boxster S, and Boxster Spyder (without PASM), as well as the Cayman Base, Cayman S, and Cayman R (without PASM). It does not fit any vehicle optioned with PASM (factory option I475), including the 2008 RS60 Spyder where PASM was standard. Sold as a single unit - two are needed for a complete rear installation - and compatible with the original spring, this is a direct bolt-in replacement that requires no fabrication or special tools. A four-wheel alignment after installation is recommended to ensure proper suspension geometry is maintained.