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Eagle SIR I-Beam Connecting Rods

4.64 out of 5 stars 86 Customer Reviews

Why spend time and money reconditioning your stock rods—when you can upgrade to a set of Eagle SIR I-Beam connecting rods for less? They're forged from 5140 steel f
Why spend time and money reconditioning your stock rods—when you can upgrade to a set of Eagle SIR I-Beam connecting rods for less? They're forged from 5140 steel for outstanding strength and reliability, and they come in both press-fit and bushed pin models. Their lightweight design places less stress on the rest of your rotating assembly to increase engine life and better handle high-rpm use. The rods are X-rayed, sonic-tested, magnafluxed, and shot-peened to stress-relieve the metal. They come with 12-point ARP Wave-Lok rod bolts and are weight-matched to within two grams. The big end sizing is controlled by in-ho
Why spend time and money reconditioning your stock rods—when you can upgrade to a set of Eagle SIR I-Beam connecting rods for less? They're forged from 5140 steel for outstanding strength and reliability, and they come in both press-fit and bushed pin models. Their lightweight design places less stress on the rest of your rotating assembly to increase engine life and better handle high-rpm use. The rods are X-rayed, sonic-tested, magnafluxed, and shot-peened to stress-relieve the metal. They come with 12-point ARP Wave-Lok rod bolts and are weight-matched to within two grams. The big end sizing is controlled by in-house CNC equipment to ensure precise machining and accurate fitment. Order the individual rod or set recommended for your year/make and engine application.

Results 1 - 25 of 28

Connecting Rods, SIR 5140 Steel I-Beam, Bushed, Chevy, Small Block, Set of 8

Part Number: ESP-5700BBLW

4.57 out of 5 stars ( 14 )

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

Connecting Rods, SIR 5140 I-Beam, Bushed, Chevy, Big Block, Set of 8

Part Number: ESP-6135B

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

Connecting Rods, SIR I-Beam, Forged 5140 Steel, 6.100 in. Length Center To Center, Chevrolet, Small Block LS, Set of 8

Part Number: ESP-SIR6100MLW

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

Connecting Rods, SIR 5140 Steel I-Beam, Press Fit, Chevy, Small Block, Set of 8

Part Number: ESP-5700BPLW

4.77 out of 5 stars ( 13 )

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

Connecting Rods, SIR I-Beam, 5.7 in. Length, Cap Screw, Press Fit, Chevy, Small Block, Set of 8

Part Number: ESP-5700SPLW

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

Connecting Rods, SIR I-Beam, Forged 5140 Steel, 5.700 in. Length Center To Center, Chevrolet, Small Block, Set of 8

Part Number: ESP-SIR5700SBLW

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

Connecting Rods, I-Beam, Bushed, 6 in. Length, 0.927 in. Floating Wrist, Forged 5140 Steel, 8740 Chromoly Bolts, Chevy, Small Block, Set of 8

Part Number: ESP-6000BBLW

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

Connecting Rods, SIR 5140 I-Beam, Bushed, Chevy, Big Block, Set of 8

Part Number: ESP-6385B

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

5140 STEEL I-BEAM CHEV SB 6.200" BUSHED

Part Number: ESP-SIR6200BBLW

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

Connecting Rods, SIR 5140 Steel I-Beam, Bushed, Chevrolet, Small Block LS, Set of 8

Part Number: ESP-SIR6100NLW

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

Connecting Rods, 5140 Steel, I-Beam, 5.700 in. Length, Bushed, Chevy SB, Each

Part Number: ESP-SIR5700BB-1

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

5140 STEEL I-BEAM CHEV SB 6.000" BUSHED

Part Number: ESP-SIR6000BB-1

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

5140 STEEL I-BEAM CHEV SB 5.700" 2.00"

Part Number: ESP-SIR5700SB-1

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

5140 STEEL I-BEAM CHEV SB 5.700" PRESS

Part Number: ESP-SIR5700BP-1

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

5140 STEEL I-BEAM CHEV SB 5.700" 2.00"

Part Number: ESP-SIR5700SP-1

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

Connecting Rods, SIR 5140 Steel I-Beam, Bushed, Chevrolet, Small Block LS, Each

Part Number: ESP-SIR6100NLW-1

Not Yet Reviewed

Estimated Ship Date: Apr 1, 2026 if ordered today

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Estimated Ship Date: Apr 1, 2026 if ordered today

5140 STEEL I-BEAM CHEV SB 6.125" BUSHED

Part Number: ESP-SIR6125BBLW

Not Yet Reviewed

Estimated Ship Date: Apr 1, 2026 if ordered today

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Estimated Ship Date: Apr 1, 2026 if ordered today

Connecting Rod, SIR I-Beam, 6.385 in. Length, Floating Pin Style, 0.990 in. Pin Bore, 2.325 in. Big End Bore, 8740 Rod Bolts, Forged 4150 Steel, Each

Part Number: ESP-SIR6385B-1

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

5140 STEEL I-BEAM CHEV BB 6.135" BUSHED

Part Number: ESP-SIR6135B-1

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

5140 STEEL I-BEAM CHEV SB 6.250" BUSHED

Part Number: ESP-SIR6250BBLW

Not Yet Reviewed

Estimated Ship Date: Apr 1, 2026 if ordered today

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Estimated Ship Date: Apr 1, 2026 if ordered today

5140 STEEL I-BEAM CHEV BB 6.135" PRESS

Part Number: ESP-SIR6135P-1

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

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Estimated Ship Date: Monday 2/9/2026

5140 STEEL I-BEAM CHEV SB 5.850" BUSHED

Part Number: ESP-SIR5850BB-1

Not Yet Reviewed

Estimated Ship Date: Mar 31, 2026 if ordered today

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Estimated Ship Date: Mar 31, 2026 if ordered today

Connecting Rods, SIR 5140 I-Beam, Bushed, Chevy, Small Block, Each

Part Number: ESP-6125BBLW-1

Not Yet Reviewed

Estimated Ship Date: Mar 31, 2026 if ordered today

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Estimated Ship Date: Mar 31, 2026 if ordered today

5140 STEEL I-BEAM CHEV SB 6.0" SJ PRESS

Part Number: ESP-SIR6000SP-1

Not Yet Reviewed

Estimated Ship Date: Mar 31, 2026 if ordered today

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Estimated Ship Date: Mar 31, 2026 if ordered today

5140 STEEL I-BEAM CHEV SB 6.200" BUSHED

Part Number: ESP-SIR6200BB-1

Not Yet Reviewed

Estimated Ship Date: Mar 31, 2026 if ordered today

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Estimated Ship Date: Mar 31, 2026 if ordered today