CP-Carrillo connecting rods designed for the BMW S55 high-performance inline-six engine that was first introduced in 2014. The engine was used in the BMW M3, M4, and M2 Competition models. The S55 engine features a twin-turbocharged design with direct fuel injection and variable valve timing. It produces impressive power output, with the latest version of the engine producing up to 503 horsepower and 443 lb-ft of torque. The S55 engine is known for its smooth power delivery and high-revving capability, as well as its impressive fuel efficiency. It also features a lightweight construction with an aluminum alloy block and cylinder head, which helps keep weight down and improve handling. The S55 engine has been widely praised for its performance and is considered one of the best engines in BMW's lineup.
Some of the key features of Carrillo connecting rods include:
Special chrome-moly based alloy forged rods
Lightweight design that reduces mass compared to stock rods
Proven strength and performance in racing
Exceptional quality control with tight tolerances and balancing
Matched and balanced set
Includes high-quality, non-stretch WMC rod bolts
Optional upgrade to CARR bolts
In summary, Carrillo connecting rods are a top choice for racers who demand the best performance and reliability from their engines.
Will NOT Work with factory OEM Pistons! 
Please note that these 144.3 mm connecting rods are designed to fit BMW N55 and S55 engines found in the following applications: 
1 Series
E82 / E88 135i N55 
E82 / E88 135is N55
2 Series
F22 / F23 M235i
F22 / F23 M235i xDrive
F22 / F23 M235i-Racing
2 Series
F87 M2 CS Racing
F87 M2 Competition S55
F87 M2 N55 
3 Series
E90 / E91 / E92 / E93 335i N55 
E90 / E91 / E92 / E93 335xi N55 
3 Series
F30 / F31 / F34 335i
F30 / F31 / F34 335i xDrive
F30 / F31 / F34
3 Series
F80 M3 
4 Series
F32 / F33 / F36 435i
F32 / F33 / F36 435i xDrive
4 Series
F82 / F83 M4 
F82 / F83 M4 GT4
F82 / F83 M4 GTS
5 Series
F10 / F11 535i
F10 / F11 535i xDrive
6 Series
F12 / F13 640i
7 Series
F01 / F02 40Li
F01 / F02 740i
X1 Series
E84 X1 35i xDrive
X3 Series
F25 X3 xDrive35i
X4 Series
F26 X4 35i xDrive
F26 X4 M40i xDrive
X5 Series
E70 X5 xDrive35i N55
X5 Series
F15 X5 sDrive35i
F15 X5 xDrive35i
X6 Series
E71 X6 xDrive35i N55
X6 Series
F16 X6 sDrive35i
F16 X6 xDrive35i