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Callies: Ultra Billet Connecting Rods 6.125" [LS LSX LT Engines]

Vendor: Callies

SKU: U17171

$2,188.00 $2,432.00

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Callies Ultra connecting rods are produced from extremely clean Timken steel that is formulated to our exact specifications. This proprietary steel is forged in Trenton, Michigan, and manufactured 100% in our Fostoria, Ohio facility. Pride in workmanship, and attention to detail are qualities you’ll discover during careful examination of our finished product. Each step of the manufacturing history of every Ultra rod is meticulously maintained by our manufacturing team. You can be confident of the material and workmanship of these quality components.

Ultra I-Beams are available in our standard weight version for extreme duty racing applications of popular Big Block Chevy, Small Block Chevy, and LS1, as well as liteweight versions for select SBC configurations. For superior clamping, a bolt upgrade to Custom Age 625 material is available for all Callies I-Beams.

The Ultra H-Beam configuration was recently added as part of our expanding connecting rod line. Made from the same premium grade Timken material, the Ultra H is designed to satisfy the requirements of the most demanding racing applications.

Callies latest connecting rod innovation is our unique Ultra XD, designed for extra cam clearance on long stroke applications. The canted fastening system allows the use of a larger base circle cam for increased valvetrain stability, more lift using the same base circle, or longer stroke. See it here.

Industry Leading Features Include:

Increased Stroker Clearance – The best bolt to block & rod to cam clearance in the industry for long stoke applications.

Bolt Spotface Gussets – Allow optimized bolt location without loss of strength or defomation of the big end bore.

100% Thread Engagement – Assures no bolt threads are left exposed in the area between the bolt thread and shank.

Specifically Designed, 260Ksi Ultra Bolts – All Ultra bolts are designed to fit each specific rod. Rolled threads are employed to provide improved engagement for a more consistent clamping load. Callies provides and recommends the use of ARP Ultra torque lube. For a complete listing of recommended torque & stretch data, please visit our FAQ page.

Below are the Ultra connecting rods we currently produce:

Small Block/LS – I Beams					Big Block – I Beams
Part #	Size	B.E.	P.E.	Total	Part #	Size	B.E.	P.E.	Total
U14125	SBC 5.700	456	185	641	U15110	BBC 6.385	572	238	810
U14130	SBC 5.850	461	186	647	U15111	BBC 6.535	577	242	819
U14131	SBC 5.850-SJ	446	182	628	U15113	BBC 6.660	578	245	823
U14132	SBC 5.850-HJ	405	179	584	U15114	BBC 6.700	579	247	826
U14135	SBC 6.000	464	193	657	U15115	BBC 6.750	580	248	828
U14136	SBC 6.000-SJ	450	186	636	U15116	BBC 6.800	581	249	830
U14138	SBC 6.000-LW	438	175	613	U15117	BBC 6.385-SJ	559	238	797
U14139	SBC 6.000-SJ-LW	428	174	602	U15118	BBC 6.535-SJ	566	239	805
U14140	SBC 6.125	466	195	661
U14141	SBC 6.125-SJ	453	190	643
U14143	SBC 6.125-LW	439	177	616	Big Block – H Beams
U14144	SBC 6.125-LW-SJ	429	174	603	Part #	Size	B.E.	P.E.	Total
U14145	SBC 6.200	470	198	668	U16200	BBC 6.385	576	228	804
U14151	SBC 6.250-SJ	457	193	650	U16210	BBC 6.535	579	233	812
U14150	SBC 6.250	469	198	667	U16230	BBC 6.700	585	237	822
U17171	LS1 6.125	467	196	663
U17178	LS1 6.350	472	201	673
					Ultra Xd – I Beams
					Part #	Size	B.E.	P.E.	Total
Small Block/LS – H Beams					U18114	6.700-Xd	586	250	836
Part #	Size	B.E.	P.E.	Total	U18130	5.850-Xd	464	191	655
U16100	SB 6.000	463	182	645	U18135	6.000-Xd	469	196	665
U16101	SB 6.000-SJ	450	179	629
U16300	LS1 6.125	466	185	651
U16301	LS1 6.460	471	190	661	Ultra Xd – H Beams
U16302	LS1 6.350	470	190	660	Part #	Size	B.E.	P.E.	Total
U16303	LS1 6.200-LW	447	177	624	U19114	6.700-Xd	581	235	816
					U19135	6.000-Xd	464	182	646