Lang Racing - Carrillo Rod Bolt Kit for BMW E60 M5 S85
We were unable to find a high quality rod bolt replacement solution for the S85 engine so we contacted Carrillo and asked them to help us design a rod bolt that would be up to par with what we have come to expect from Carrillo in terms of strength and quality.
Carrillo gave us a great option with their WMC rod bolt. The WMC bolt is superior to a typical ARP 2000 bolt with an ultimate tensile strength of 260,000 psi while the CARR bolt offers a UTS of 285,000 psi. These kits ship with Carrillo bolt lube to be used during installation.
The WMC rod bolts should be torqued to 55ft/lbs using the Carrillo bolt lubricant. Do not use the BMW torque procedure, because the WMC bolts do not stretch as much as the factory bolts you will overtorque and yield the Carrillo bolts using the factory angle torque method. We've determined that this torque will stretch the bolts within the Carrillo specifications while also achieving an extremely round big end bore. Although the factory rod does not have a through hole to measure rod bolt stretch we did in house testing using a similar rod as a fixture to be certain that the WMC fastener was not being overstretched.
If considering the CARR bolt please contact us for installation instructions.
These kits are typically kept in stock here in Irvine and are ready to ship out same day.
2006-2010 BMW E60 M5