Lightweight Crank Pulley for R53
The CravenSpeed stock size pulleys are stock diameter (OEM sized) crank pulleys, utilizing the original belt layout. Since the crank pulley diameter is unchanged, they maintain alternator output at exactly stock output levels so you need not worry about flat batteries or weak charging capabilities. Through extensive weight savings afforded by 6061 aircraft aluminum construction, power gains of up to 10% are available depending on how your MINI is set up. CravenSpeed crank pulleys come perfectly balanced, and feature anodizing for superb wear resistance & strength. Our Cooper S R53 (2002-2006) stock size pulley weighs 1.09 lbs
The rule of thumb is that each pound of weight taken off the engine's rotating assembly is worth approximately 2.7HP. The concept is that the crank is a parasite; it does not put power to the drivetrain but still requires the energy produced by the engine to rotate. When you reduce this parasitic weight, you release power that was previously used only for spinning the supercharger and alternator. For an extra dose of power, our 2% overdrive pulley for the R53, will trade the weight savings for a bit more boost out of the supercharger. The 2% overdrive pulley weighs 1.18 lbs.
|Which Gates belt do I need?||Stock Crank Pulley||2% Oversized Pulley|
|Stock SC Pulley||Stock Belt||Stock Belt|
|15% SC Pulley||#060535||Stock Belt|
|17% SC Pulley||#060535||#060535|
Is This Crank Pulley Safe?
The pulleys on the R53's engine and most new smaller engines have an elastomer (rubber ring) incorporated into the pulley that looks similar to a harmonic damper. The elastomer in the OEM pulley serves as an isolator, which is there to suppress natural vibration and noise from the engine itself, the A/C compressor, P/S pump, and alternator. The purpose of a traditional harmonic damper is to protect against crank failure from torsional movement. This is not necessary in the MINI or most modern engines because of the many advances in engine design and materials. Factors such as stroke, displacement, inline, V configurations, power output, etc., determine when and how these harmonics and torsional movements occur.
Note: this Lightweight Crank Pulley kit includes a Replacement OEM Crank Pulley Bolt.
:a usually written guarantee of the integrity of a product and of the maker's responsibility for the repair or replacement of defective parts
CravenSpeed warranties everything that we make. The time period is infinite.
Free Domestic Shipping
The shipping weight of this product is: 1.50 LBS
We are happy to provide free shipping on all domestic orders. Since this product weighs more than one pound, it will ship via USPS Priority Mail. This service generally takes 2 business days to reach most locations across the country from our location in Portland, OR. For those in locations far from major postal hubs, this service will take 3 business days to arrive.
We ship orders every weekday. All orders placed by 2:00 pm PT will ship the same day. You will receive a shipping notification when we print the label for your order. The tracking will not indicate that the order has been shipped until it is picked up and scanned in by the carrier. Orders placed after 2:00 pm PT on Friday will ship on Monday.
Our Team is comprised of a small group of dedicated individuals who each pride themselves on providing their best work to our customers every day. We are all willing to go above and beyond for our customers to make sure they are happy with their entire shopping experience. If you need anything, please drop us a line at email@example.com and we'd be happy to help you out. Our customer service team will usually get back to you within the hour during business hours.Click here to meet the team!