I purchased a 2010 Clublman S last year with some JCW upgrades.
Here's what I got:
2010 Mini Clubman S
JCW Aero body kit
JCW Tuned
JCW Exhaust
JCW Intake
JCW Upper strut brace
JCW Coil

As far as I know thats it. I'm just wondering, if I where to buy a JCW Clubman from a dealer, what else would there have been on the car? I'm thinking breaks, wheels, rims, steering wheel. What about the engine? Is there anything else other than being JCW tuned?

Its a great little car! I love it!

 

Does the factory JCW have upgrade engine internals?

 

JCW coilovers?
i though only on the GP?

 

Yes, I believe that the exhaust valves are different....hardened? I believe the turbo is different - larger capacity....and the ECU version would go with that.

I think the coilovers are GP only.

My 2009 Clubman JCW has the same steering wheel as the S. I believe the stock fJCW wheels were the 17 inch challenge spokes - which fit over the Brembo brakes without spacers.

 

Besides the brakes, turbo and valves the JCW also includes lower compressions pistons 10:1 vs 10.5:1, 3.5 bar MAP sensors vs 2.5 bar, higher flow MAF sensor, smaller diameter front sway bar to reduce understeer and a different standard transmission. Final drive ratio is 3.70:1 vs 3.65:1 as I recall.

 

I can confirm that Tigger is correct on the front sway bar diameter. My 2009 Clubman S with non-sport suspension has a 24mm front sway bar, and my 2009 Clubman JCW has a 23.5mm front sway bar.

I've always wondered why the S front sway bar is 24mm....even though I ordered it without a sport suspension. The only thing that I can think of is that I ordered limited slip and maybe that affected the front sway bar size.