What started life as a humble BMW 135i was stripped down to its bare shell and reborn from the ground up into something truly special. 
This is our BMW MCSL — a tribute to the golden era of naturally aspirated performance, built for the connoisseur who appreciates precision, purity, and OEM perfection. The CSL moniker, standing for Coupe Sport Lightweight, is more than just a badge — it represents a philosophy we followed throughout the build.

Under the bonnet lies the iconic S65 V8 from the E92 M3, paired with a 6-speed manual gearbox and M3 limited-slip differential. The full M3 suspension was swapped over as well, making this car not just look the part, but drive like the real thing. It sits on Bilstein B6 Damptronic shocks with functional EDC (Electronic Damper Control) and rides on Michelin Pilot Sport 4S tyres, OEM style 359 wheels (1m and e92 comp)  
To achieve true OEM+ reliability, every major mechanical component on this MCSL was either brand-new or fully overhauled. Key upgrades include:

Full OEM BMW 1M body panels (front & rear)
Brand-new front subframe
Complete set of brand-new control arms (front & rear)
New OEM brake discs, pads and hardware
New OEM clutch & dual-mass flywheel
Bilstein B6 Damptronic shocks with fully functional EDC
Brand-new OEM Style 359 wheels
Michelin Pilot Sport 4S tyres
New OEM headlights and taillights
Engine & Drivetrain Refresh
The S65 received a full reliability rebuild by Tune-Tech master technicians, including:
New throttle actuators
New rod bearings and main bearings
New valve lifters
All engine seals replaced (top to bottom)
New timing-chain tensioners & guides
Oil pump service
New valve-cover gaskets
New OEM starter motor
New OEM alternator
New OEM aircon compressor
New OEM power-steering system components
New fuel pump
New water pump
All wear items replaced with OEM BMW components only
Interior & Finishing
Full Alcantara interior retrim
OEM M Performance steering wheel
M Performance pedals
Custom CNC-machined door sills by @oemcustomz
This is only a fraction of what was replaced.
The build philosophy was simple:
 If it wasn’t perfect, it was replaced.
 OEM parts only.

 No shortcuts — ever.

This car is 115 kg lighter than an M3, with a shorter wheelbase , the same track width and 8000 glorious revs to play with-  effectively an 85% scale M3, but more nimble and more focused. Every component used was a brand-new OEM part. All M3 features have been fully integrated, including EDC, M Drive, and the complete M driving experience.

Summary

Engine

Performance

Economy

Safety

Features

Aesthetics and Comfort

Specifications

2011 BMW 1 Series 1M 'CSL'

Strong performance for confident overtakes.

High Power Output

Strong mid-range shove for effortless overtaking.

High Torque Output

Fast Acceleration

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