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Design911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk Facebook Instagram

Rohler

Rohler
About Rohler

ROHLER for Porsche

ROHLER creates premium replacement and performance components for Porsche vehicles, developed for owners, restorers and specialist workshops that believe the smallest details matter. Design911 offers ROHLER products alongside genuine, OE Match and quality aftermarket options, supported by specialists who understand these cars.

The ROHLER story

ROHLER is defined by a straightforward philosophy: “Don't simply replace it. Improve it.” Its range extends from precision-machined titanium fasteners and engine hardware to carefully engineered replacement components, with an emphasis on superior materials, precise fitment and long-term durability. The understated design approach allows attention to detail to continue beyond visible parts to the hardware and engineering underneath. Premium materials. Precision engineering. Lasting solutions. ROHLER — Engineered to Belong.

Why choose ROHLER for your Porsche

Many Porsche components and fixings work in demanding conditions involving heat, moisture, road salt and repeated servicing, where conventional parts can eventually corrode, seize, deteriorate or become difficult to service. ROHLER develops more considered long-term solutions and, where the application demands it, uses materials such as Grade 5 titanium for their combination of high strength, low weight and exceptional corrosion resistance. Positioned above conventional aftermarket components, the brand combines modern engineering, carefully selected materials and precise fitment for restoration, maintenance and performance-focused work. Design911 hand-picks brands for their quality and suitability, helping customers select components for routine repairs, detailed restorations or carefully planned upgrades.

  • Premium replacement and performance components developed for Porsche vehicles
  • Precision-machined titanium fasteners and carefully engineered engine hardware
  • Grade 5 titanium used where applications require strength, low weight and corrosion resistance
  • Suitable for air-cooled builds, engine and transmission rebuilds and high-value restorations
  • Components intended to improve known weak points and withstand demanding environments
  • Fitment supported by supplied model coverage and relevant OE references


Categories we stock from this brand

Design911 stocks ROHLER across the following categories for Porsche models. Check the supplied model coverage, model year, side or position, connector type and OE references where relevant to confirm the correct application.

Engine Rebuild Parts ROHLER engine hardware and replacement components are suited to planned Porsche engine overhauls, specialist workshop builds and projects where premium materials and attention to detail are priorities.

  • Internal wear can present as low or uneven compression, excessive oil consumption, persistent leaks, abnormal noises, low hot-idle oil pressure or metallic debris in the oil and filter.
  • Before committing to a rebuild, carry out compression and leak-down tests, inspect the bores with a scope and check the oil and filter for contamination or debris.
  • While the engine is apart, assess chains, guides, seals, bearings, gaskets and critical hardware to reduce the chance of a repeat strip-down.
  • Confirm the underlying cause, including overheating, oiling problems or coolant and oil cross-contamination, before installing replacement components.


Camshaft covers / Gaskets Camshaft covers and gaskets are renewed to restore reliable sealing, control oil leaks and protect the upper areas of a Porsche engine from contamination.

  • Heat cycling can harden or shrink gaskets, while covers may crack, corrode, distort or develop damaged sealing surfaces.
  • Typical symptoms include oil seepage, wetness around fasteners, burning-oil smells, smoke from oil reaching hot components and residue around the camshaft-cover area.
  • Do not rely on overtightening bolts; check cover flatness and sealing surfaces, use the correct torque sequence and renew brittle seals.
  • Inspect the breather or PCV system and crankcase ventilation because excess pressure can contribute to recurring leaks.


Engine Tuning ROHLER performance components support Porsche projects intended to improve known weak points, refine durability or complement carefully planned engine modifications.

  • Before tuning, confirm good mechanical health through compression, fuelling, sensor, cooling and oil-temperature checks.
  • Investigate hesitation, flat spots, poor idle, surging, inconsistent boost, misfires and abnormal fuel mixture readings before selecting components or calibration changes.
  • Check for boost and vacuum leaks and resolve mechanical faults rather than attempting to mask them through tuning.
  • Any modification should be considered as a complete system, with suitable supporting components and a calibration appropriate to the application.


Camshaft Covers Replacement camshaft covers are used where original covers have cracked, warped or can no longer provide a dependable sealing surface, often as part of Porsche top-end work.

  • Camshaft covers retain engine oil and protect camshafts and valvetrain components from dirt and debris.
  • Inspect for distortion, cracks, damaged bolt holes, brittle seals and persistent leaks that remain after gasket replacement.
  • Follow the specified tightening pattern and torque because overtightening can distort a cover or damage threads.
  • Check crankcase breathing at the same time, as restricted ventilation can worsen top-end oil leaks.


Interior & Accessories Interior components and accessories can refresh worn touch points, replace damaged trim or add practical storage and comfort features without changing the core character of a Porsche.

  • Common concerns include sticky switches, broken clips, rattles, sagging trim, worn surfaces, faded plastics and damaged hinges or handles.
  • Brittle plastics, ageing foam adhesives and water ingress can contribute to damp smells, mould or warped panels.
  • Many parts vary by Porsche model and year, so check compatibility details and part references carefully.
  • Use suitable trim tools and renew missing or damaged clips and fasteners to minimise loose panels and new rattles.


Explore the range

Explore ROHLER components for high-value Porsche restorations, air-cooled builds, engine and transmission rebuilds, motorsport-inspired projects and specialist workshop work at Design911. Match the Porsche model and year and, where possible, cross-check OE part numbers before fitting; renew critical consumables such as seals, clips and bolts and address worn mounts, misalignment or contamination so the underlying cause is resolved.

DISPLAYING 241 to 256 (of 273 products)
96410511603
Product Information
Product Information
Engine valve covers SET OF 2 Billet Aluminium, LOWER.
SET OF 2.



Fits:
Porsche 964 1989-94


The Porsche 964 engine valve covers are made of CNC machined billet aluminum. The benefits of using CNC machined billet aluminum valve covers are that they are more durable and resistant to corrosion than the factory covers. They also have chamfered edges and tight gasket fitment which helps prevent oil leaks. The 964 valve covers replace fragile, leaking factory covers and accept reusable OEM gaskets. With a corrosion-resistant finish, chamfered edges and tight gasket fitment, these are simply one of the best valve covers on the market, delivering safety and optimization in your 911’s engine bay



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96410511603
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3609001608
Product Information
Product Information
Harmonically damped underdrive pulley. Dampens/reduces internal engine harmonics for improved engine performance, efficiency and longevity. 
replacement for OE 99710224101


Fits on all Porsche 986, 996, 987, 997 models EXCEPT 2.9L (multi hole crank pulley pattern), DFI engines, GT2, GT3 and Turbo.

Increase your engine output by reducing the draw of the engine's ancillaries ie the power steering pump, Air Conditioning, water pump and alternator by slowing them down and reducing the horsepower they use.

Underdrive pulley is one of the cheapest returns for the money spent when it comes to actual performance and horsepower gains for track and street use cars.

Installation tool (wrench) included, new OEM washer and crankshaft pulley bolt is recommended but not included with this product.

Please add Drive Belt for Under Drive Pully cars WITH Aircon Porsche 996/ Boxster 986/997 99610215199/1

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3609001608
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3609001608

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3601109441
Product Information
Product Information
Torque tube bearing set of 4
Four anodized aluminum bearing blocks included to a set.

Shaft size: 24.4mm - please measure before ordering



Fits:
Porsche 944 / S / S2 / Turbo '82-91

944 torque tube bearings have not been available from Porsche or as an aftermarket. Factory new torque tube costs over £3000 which is always too much for 944 as the car price is so low. So this product would be a solution for 944 with worn out torque tube bearings. Bearing could be used in both street and racing. It is used to rebuild any 944 torque tube.

Fits part number 1 on diagram.

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3609001601-NO-AC
Product Information
Product Information
Under drive crankshaft pulley (without A/C) kit. Includes pulley, drive belt and new bolt. Pulley is made from 6061-T6 aluminum, Improve horsepower and torque while reducing parasitic drag from the alternator, power steering pump and water pump.


FITMENT GUIDE:
Porsche 986 Boxster:
1997-1999 2.5L H6
2000-2004 2.7L H6
2000-2004 S 3.2L H6
986 Spec Boxster Legal

Porsche 987 Boxster / Cayman
2005- 2.7L H6
2005-2006 3.2L H6
2007- 3.4L H6

Porsche 996 / 997
1999 3.4L H6 NA
2001-2004 3.6L H6 NA
2005- 3.6L H6 NA

Will not work on 3.8L (S) or Turbo models

For INSTALLATION GUIDE CLICK HERE

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3609001601-NO-AC
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3609309627
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Product Information
SET OF 2 , Fast Road Performance gearbox / transmission Mounts. Semi-Solid Design.



Fits:
Porsche 986 Boxster
Porsche 987 Boxster
Porsche 987 Cayman

Simple and easy upgrade to failing OE transmission mounts. Perfectly balanced without compromising on the comfort and noise in the cabin.

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3609309627
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3609309625
Product Information
Product Information
Performance engine mounts (PAIR). Included two M12 x 1.75 Nuts



Separate inserts available for varying densities
Shore ratings 65A Street (available separately)
Shore ratings 75A Fast Road (included in engine mounts)
Shore ratings 85A Track (available separately)

Fits:
Porsche 964 C2 / C4 / RS / Turbo
Porsche 993 C2 / C4 / RS / Turbo
Porsche 996 C2, C4, C4S, Turbo, GT2, GT3
Porsche 997 C2, C2s, C4, C4s, Turbo, GT2, GT3

Please note: the threads needs to be treated with loctite before installation (not sold with the product).

Replacing your factory engine mounts with these performance semi-solid mounts will dramatically decrease engine movement which then will result in better acceleration and handling of your Porsche.

CNC machined mounts with PU bushes are absolute must have for any car on track or on the street. Very easy to replace by experienced DIYers.

For 911 & Porsche world article / fitment guide pdf please CLICK HERE

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997375049
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3609309624
3609309625
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99610622652PRM
Product Information
Product Information
HD Aluminium construction Coolant hose connector for Oil separator.

Fits:
Porsche 996 C2 / C4 / C4S 1998-05
Porsche 997 CARRERA 2005-08

Diagram ref no 18

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Lightweight Under drive Pulley is made from 6061-T6 aluminium. Offers improved HP & TQ by reducing drag from the power steering pump, A/C, water pump and alternator.

Pulley outer diameter: 123mm (measured from ribs to ribs)

Increase your engine output by reducing the draw of the engine's ancillaries ie the power steering pump, Air Conditioning, water pump and alternator by slowing them down and reducing the horsepower they use.

Underdrive pulley is one of the cheapest returns for the money spent when it comes to actual performance and horsepower gains for track and street use cars.

Installation tool (wrench) included, new OEM crankshaft pulley bolt is recommended but not included with this product.

Note: In order to accommodate the smaller diameter pulley, the timing boss on the engine case must be shortened using die grinder or similar tool (see link for instructions below).

Replacement Pulley for Original Porsche parts No. 99610211563

Fits:
Porsche 996 3.4L
Porsche 996 3.6L
Porsche 997 3.6L
Porsche Boxster 986
Porsche Boxster 987
Porsche Cayman 987C

**Please note you will need a new shorter Pully Belt which you can purchase from us.
99610215199/1
Under drive pulley w/ air conditioning - 2100mm

99610215198/1
Under drive pulley w/o air conditioning - 1905mm

Underderive Pulley Installation Instructions - CLICK HERE



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3602509641
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Front Adjustable Camber Plate Top Mount Set - Sealed for Porsche 993/964 

SET OF 2.

Fits:
Porsche 964 / 993*

* For cars with factory Boge shocks please call for fitment details.

** For 993's with factory strut mounts, longer strut mount bolts (m8x25mm) are required. Fits Bilstein PSS9/10 Kits, KW suspension and Ohlins suspension by drilling the centre bearing a little larger.

Upgrade your vehicle's suspension with this high-performance monoball top mount, designed as a direct replacement for the original OE top mount. By replacing the compliant rubber bushing with a precision spherical bearing (monoball), unwanted suspension deflection is significantly reduced, providing a more direct connection between the suspension and chassis.

The result is improved suspension rigidity, sharper steering response, and more precise handling, allowing the suspension geometry to remain more consistent under high cornering and braking loads. This makes monoball top mounts an ideal upgrade for performance driving and motorsport applications where maximum steering precision and chassis feedback are desired.

Please note that, due to the elimination of the original rubber isolation, increased road noise, vibration, and harshness (NVH) will be transmitted into the cabin. Ride comfort will be reduced, and suspension noise may become more noticeable during normal road use.

Key Features:

  • Direct replacement for the original OE top mount.
  • Precision monoball (spherical bearing) design.
  • Increased suspension rigidity.
  • Quicker, more responsive steering.
  • Improved handling and suspension geometry control.
  • Ideal for performance and motorsport applications.

Important Information:
This product is recommended for track use only. The increased noise, vibration, and reduced ride comfort make it unsuitable for drivers seeking OE levels of refinement for everyday road use.



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Replacement spring plates with friction free precision rod ends. Easy adjustment of toe angles without affecting camber.



(Please note original Porsche spring plates OE Numbers 96433106008 / 96433106010 are no longer available, so these are a great alternative)

The precision rod end also improves driver feedback and maintains alignment settings for better handling.
The plates are fabricated from alloy steel and nickel plated for strength and corrosion resistance.

Allows for camber settings up to -4.5 deg. Mount with slot on top for camber angle more than -1.5 deg.

Price is SET OF 2

Fits:
Porsche 964 C2 , C4
Porsche 964 RS , Turbo 

Motorsport Product

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99610397570/1
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Product Information
Connecting Con Rods SET OF 6. Porsche 993 Turbo / 996 TURBO SET OF 6



These are 4340 forged Chromoly steel with high strength 3/8 Rod Bolts.

Length: 5.000 inch / 127.00mm
Style: PRO-H
Bolt: 3/8
Materials: Forged 4340
Pin Width: 0.768 inch / 19.51mm
Big Width 0.744 inch / 18.90mm
Big Bore: 2.2840 inch / 58.014mm
Pin Bore: 23mm
Total/Rotate/Recip (gr)* 535 / 374 / 161

Fits:
Porsche 993 Turbo
Porsche 996 Turbo

Click picture for large parts diagram.
Diagram Ref No 10

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93010397400/1
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Product Information
Connecting Con Rods SET OF 6. Porsche 911 3.0L / SC SET OF 6



These are 4340 forged Chromoly steel with high strength 3/8 Rod Bolts.

Length: 5.030 inch / 127.75mm
Style: PRO-H
Bolt: 3/8
Materials: Forged 4340
Pin Width: 1.000 inch / 25.40mm
Big Width 0.856 inch / 21.74mm
Big Bore: 2.2050 inch / 56.007mm
Pin Bore: 22mm
Total/Rotate/Recip (gr)* 553 / 384 / 169

Fits:
Porsche 911 1978-83 3.0L

Click picture for large parts diagram.
Diagram Ref No 16.

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93010397400
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91110301321/1
Product Information
Product Information
Connecting Con Rods SET OF 6. Porsche 911 2.0L / 2.2L
SET OF 6



These are 4340 forged Chromoly steel with high strength 3/8 Rod Bolts.

Bolt is 3/8'' and its torque is 75N.M.

Length: 5.120 inch / 130.00mm
Style: PRO-H
Bolt: 3/8
Materials: Forged 4340
Pin Width: 1.000 inch / 25.40mm
Big Width 0.854 inch / 21.69mm
Big Bore: 2.4019 inch / 61.008mm
Pin Bore: 22mm
Total/Rotate/Recip (gr)* 568 / 399 / 169

Fits:
Porsche 911 2.0L
Porsche 911 2.2L

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91110201750/1
Product Information
Product Information
Crankshaft v-belt pully 116.5mm.

Fits:
Porsche 911 08/1968-75 (not Sportomatic)
Porsche 914 1970-76

Diagram ref no 15

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99918200350
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Wheel nuts PACK OF 20 - light weight Titanium Porsche 911 1965-89 / 964 / 993 / 944 / 968 / 928 / 924



PACK OF 20

Fits:
Porsche 911 1965-89
Porsche 964
Porsche 993
Porsche 944
Porsche 968
Porsche 928
Porsche 924

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99736120040
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Product Information
Locking wheels bolt kit Titanium 
Fits cars without spacers* or with spacers up to 7mm
Upgrade your Porsche’s wheel security and performance with DesignTek Titanium 12-Point Wheel Locking Bolts — precision-engineered for strength, lightness, and style.  

Fits:
Porsche 986 / 987
Porsche 996 / 997
Porsche 981 / 982 / 991 / 992*

*Cars with electronic parking brake will require at least 3mm spacer at the rear axle for the bolt clearance

Manufactured from Grade 5 (Ti-6Al-4V) titanium alloy, these bolts deliver exceptional tensile strength while being around 40% lighter than steel, helping to reduce unsprung weight for sharper handling and improved suspension response. The 12-point head design provides a secure fit and distinctive motorsport appearance, perfectly complementing both standard and performance wheel setups. Each set includes a unique locking key for enhanced anti-theft protection, ensuring your wheels stay safe without compromising ease of use. The titanium finish offers superb resistance to corrosion, heat, and fatigue, ideal for both road and track applications.



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DISPLAYING 241 to 256 (of 273 products)