Legendary BMW Heritage

The name Hans Stuck carries serious weight in motorsport history. Hans Stuck became synonymous with aggressive touring car racing during BMW’s most exciting racing years. The original BMW 635 CSi race cars dominated circuits across Europe with their unmistakable wide stance, screaming straight-six engines, and razor-sharp chassis dynamics.

This replica channels that same character and atmosphere — blending classic BMW styling with extensive race-inspired engineering upgrades throughout the entire vehicle.

At its core sits one of BMW’s most respected engines: the legendary M30 straight six.

Engine & Performance

E32 M30B35 Powerplant

Powering this machine is a later-model E32 3.5L M30B35 engine — one of BMW’s most durable and tunable inline-six platforms ever produced.

The cylinder head has been professionally gas-flowed by the renowned Van der Linde Performance, improving airflow efficiency and allowing the engine to breathe more aggressively across the rev range.

Combined with the custom exhaust and fuel system setup, the result is a responsive naturally aspirated straight-six delivering the unmistakable sound and torque characteristics BMW enthusiasts crave.

Engine Specifications

• E32 M30B35 3.5L inline-six
• Gas-flowed cylinder head by Van der Linde Performance
• Modified valve cover venting
• Aluminum oil and water catch tanks
• Standard wet sump with modified baffle system
• E24 oil cooler
• “Power Mode” ignition & ECU system
• M3 fuel injectors
• 4 Bar Bosch electric fuel pump
• Adjustable fuel rail pressure system

This setup was clearly built with real-world high-performance driving in mind — designed to maintain fuel delivery, lubrication stability, and engine reliability under hard cornering and extended spirited driving conditions.

Drivetrain Built for Drivers

Dogleg Getrag 5-Speed Manual

One of the standout features of this build is the iconic Dogleg Getrag 5-speed manual gearbox.

True enthusiasts understand the significance of a dogleg transmission. First gear is positioned down and left, while second through fifth form a direct H-pattern optimized for aggressive upshifts during spirited driving and racing applications.

Even more desirable is the fact that:

• 5th gear is direct drive
• Gear spacing is ideal for performance driving
• The setup delivers a far more engaging analog driving experience

Power is transferred through a 3.25:1 LSD side-loader differential, mounted to a modified E28 ERA rear subframe, providing both improved strength and superior chassis dynamics over the earlier setup.

Purpose-Built Suspension Engineering

This is not a cosmetic build. The suspension and chassis engineering reveal the depth of development behind the car.

Front Suspension

The front end features:

• Modified E12 ERA cross member
• Fully remade lower control arms using chrome moly tubing
• Heavy-duty 14mm rod ends
• E28 struts and hubs

Rear Suspension

The rear setup includes:

• E28 subframe and trailing arms
• Vesconite bushes on outer pivots
• 16mm rod ends on inner pivots
• Adjustable toe and camber settings

The extensive use of rod ends and strengthened components gives the chassis a far more direct and connected feel compared to standard rubber-mounted systems, while the alignment adjustability allows the car to be fine-tuned for road or track use.

Braking & Handling

Stopping power comes from a proven hybrid BMW setup:

• Front E46 drilled discs
• E28 front calipers
• Standard E28 rear brakes

Servo assistance is handled through a hydraulic assist system with a “BOMB” accumulator, a setup commonly respected for delivering strong and consistent braking feel.

The anti-roll bar configuration further sharpens chassis response:

• Front E28 anti-roll bar mounted behind suspension
• Rear standard E28 anti-roll bar

Steering duties are managed through the standard E12 ERA system paired with a Mercedes-Benz steering damper, improving steering stability and reducing harsh kickback during aggressive driving.

Race-Inspired Exhaust Note

One of the most dramatic features of the car is its:

Macpherson-built equal-length 40mm headers

Finished with a right-side exit configuration — exactly as per the ERA race cars — the exhaust system gives the vehicle an unmistakably aggressive touring car presence.

The sound profile of a built M30 through equal-length headers is nothing short of intoxicating:

• Deep low-end growl
• Metallic mid-range resonance
• Classic BMW straight-six scream at higher RPM

This is the type of car that announces itself long before it arrives.

Motorsport-Focused Chassis

The body and shell have been comprehensively reinforced for performance use:

• Full roll cage installed
• Body stiffening completed
• Differential mounting points strengthened
• Front bumper lightened

A custom 90-liter baffled fuel tank mounted in the boot ensures reliable fuel supply during hard cornering and long-distance driving, while additional breather systems have been incorporated to accommodate extreme driving conditions.

Every aspect of this build reflects serious engineering consideration rather than cosmetic modification.

An Analog Driving Experience Few Cars Can Match

Modern performance cars may be faster on paper, but very few deliver the raw mechanical involvement of a properly engineered classic BMW like this.

This 635 CSi replica offers:

• Naturally aspirated straight-six character
• Manual dogleg gearbox engagement
• Lightweight motorsport-inspired chassis feel
• Adjustable race-derived suspension
• Classic touring car styling
• Authentic period-correct motorsport atmosphere

It is the type of machine built for enthusiasts who appreciate connection, sound, feedback, and engineering purity.

Vehicle Summary

1977 BMW 635 CSi Hans Stuck Replica

Specifications:

• E32 M30B35 engine
• Gas-flowed head by Van der Linde Performance
• Dogleg Getrag 5-speed manual gearbox
• LSD 3.25:1 differential
• Modified E28 ERA subframe
• Chrome moly suspension arms
• Adjustable rear toe & camber
• E46/E28 brake conversion
• Hydraulic brake assist system
• Equal-length side-exit headers
• Full roll cage
• Reinforced chassis
• 90L baffled fuel tank

Price: R450 000

For the enthusiast seeking something truly unique — a machine that combines classic BMW heritage with genuine motorsport engineering — this Hans Stuck Replica represents an incredibly rare opportunity.