Ultra I-Beam

Ultra connecting rods are made entirely in the U.S.A. Every Ultra connecting rod is produced from specially formulated Timken 4330V steel. This material is then precision forged in Michigan and fully machined in our Fostoria, Ohio facility. Many geometric nuances have been incorporated into the design of Ultra connecting rods. These design features enhance the Ultra against specific loads and stresses which are applied to connecting rods subjected to high load, high RPM applications. Ultra connecting rods are fastened by high alloy cap screws made specifically for severe duty service by ARP Inc. Produced with rolled threads, these unique bolts offer improved thread engagement for a smoother more consistent net clamping load.  To eliminate deformation and extrusion only AMS 642 bronze alloy is used within the wrist pin housing bore.

Ultra I-Beams are available in our standard weight version for extreme duty racing applications of popular Big Block Chevy, Small Block Chevy, Chevy LS, Big Block Ford, Small Block Ford, RY45, Ford Modular, Nissan GTR, Buick 3.8, as well as lightweight versions for select SBC configurations. For superior clamping, a bolt upgrade to MP 3.5 material is available for all Callies I-Beam connecting rods.

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Below is only a partial listing of part numbers.  Please call for additional part number information and availability.

Big Block I-Beam
Description Typical Wt. Part # MSRP
6.385 2.200 812g U15110 $1,851.00
6.535 2.200 820g U15111 $1,851.00
6.660 2.200 823g U15113 $1,851.00
6.700 2.200 826g U15114 $1,851.00
6.750 2.200 828g U15115 $1,851.00
6.800 2.200 837g U15116 $1,851.00
Single BBC Ultra $232.00
BBC Ultra Long Rod
7.100 2.200 848g U15270 $2,020.00
7.200 2.200 853g U15280 $2,020.00
Single BBC Ultra Long Rod $237.00
Big Block Small Journal
** Available by special request
6.385 2.100 799g U15117 $1,851.00
6.535 2.100 809g U15118 $1,851.00
Single BB 2.100 Journal Ultra $258.00
Small Block I-Beam
Description   Typical Wt. Part # MSRP
5.700 2.100 642g U14125 $1,851.00
5.850 Honda 580g U14132 $2,291.00
5.850 2.000 629g U14131 $1,851.00
5.850 2.100 648g U14130 $1,851.00
6.000           Honda 586g U14137-3.5 $2,291.00
6.000 2.000 636g U14136 $1,851.00
6.000 2.100 656g U14135 $1,851.00
6.125 2.000 639g U14141 $1,851.00
6.125 2.100 662g U14140 $1,851.00
6.200 2.100 664g U14145 $1,851.00
6.250 2.000 641g U14151 $1,851.00
6.250 2.100 667g U14150 $1,851.00
Single SBC Ultra $243.00
Small Block Light Weights
Description Typical Wt. Part # MSRP
6.000 2.000 600g U14139 $1,851.00
6.000 2.100 613g U14138 $1,851.00
6.125 2.000 602g U14144 $1,851.00
6.125 2.100 616g U14143 $1,851.00
Single SBC Light Weight Ultra $243.00
LS Series I-Beam
Description   Typical Wt. Part # MSRP
6.125 2.100 662g U17171 $1,851.00
6.350 2.100 669g U17178 $1,851.00
6.350 Honda 609g U17180-3.5 $2,291.00
6.350 2.100 655g U17179 $1,851.00
Single LS Ultra $243.00
Ford 460-429
with Ford Correct Tower Offset these rods are perfectly matched to Ford bore spacing
Description Typical Wt. Part # MSRP
6.700 2.200 U15814 $1,852.00
6.800 2.200 U15816 $1,852.00
Ford 351 Small Block
with Ford Correct Tower Offset these rods are perfectly matched to Ford bore spacing
Description Typical Wt. Part # MSRP
6.200 2.100 636g U14845 $1,852.00
6.250 2.100 630g U14850 $1,852.00
6.250 2.000 U14851 $1,852.00
RY45
6.125 2.000 588g U14844-3.5 $2.122.00
Ford Modular
These connecting rods are made to accommodate Ford Modular rod journal diameters and widths.  Wrist pin bores are machined for .866 diameters.
Description Typical Wt. Part # MSRP
5.933 2.239 642g U14825 $1,852.00
Buick 3.8L V-6 (Even Fire)
Machined to accommodate model years 1975-2004, having rod journal diameter of 2.249 inch with .906 inch wrist pins. Ultra Buick 3.8 rods are fastened with ARP 7/16 cap screws made of 260 Ksi tensile strength specialty steel.
Description Typical Wt. Part # MSRP
5.600 2.249 660g U16500 $1,242.00
Nissan VR38 / GTR
Precisely manufactured for the VR38 engine.
Description   Typical Wt. Part # MSRP
6.500 2.205 U15300 $1,664.00
6.500 2.200 U15305 $1,664.00
Single GT-R rod $282.00
These connecting rods are made to accommodate Nissan rod journal diameters and widths. Wrist pin bores are machined for .905 inch wrist pins. Ultra VR38 connecting rods are fastened with purpose built ARP 7/16 cap screws made of 260Ksi tensile strength specialty steel.