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K1 Technologies Connecting Rods

All Sport Compact Engines
K1 offers two different types of connecting rods made from Forged 4340 Steel and Billet 4340 Steel. Proprietary bolts produced by ARP to K1 specification have asymmetrical threads to equally load each thread when under pressure. Connecting rods are shot peened for improved fatigue life and are finished in the USA using our state of the art Sunnen hones. Housing bore tolerances of +/- .000050” (50 millionths) match some of the tightest accepted tolerances in the industry.

The rods have double bridged caps to reduce housing bore distortion and there is no ridge between the blades acting as a stress riser. Rods are weight-matched to +/- 1 gram and boxed with the individual rotating, reciprocating, and total weights conveniently noted for balancing. A special wrist pin bushing material is also used with these assemblies offering optimal friction reduction.

H-Beam (H)
Billet 4340 Steel H Beam connecting rods. Closely monitored material mechanical properties for optimum performance. Designed and finish honed in the USA. Sizes held to some of the tightest tolerances in the industry, +/- .0001” and +/- 1 gram per end. Shot peened for improved fatigue life. Bronze wrist pin bushings.
  • 2-piece forging for increased strength
  • Multi stage heat treated process
  • X-rayed and magnafluxed
  • Precision alignment sleeves positively locate the rod cap, maintaining perfect alignment
  • Exclusively using ARP 2024 fasteners.

CUSTOM RODS: Don't See Your Engine Below? No Worries!
We have the capability to make custom connecting rods made to YOUR EXACT SPECIFICATIONS! If you do not see a connecting rod listed below for your application or would like special weights or widths, please contact us and our Technical Engineers will design a custom set of rods built to your exact specifications. Call or email us: (603) 378-0090

Our K1 Low Price PROMISE To You!
We're not allowed to advertise our lowest prices online, but if you call or email you'll be able to buy K1 Rods at a discount often at $100 or more OFF the prices listed below. Give us a ring at (603) 378-0090 or email us with the K1 part #!

Engine Part #NotesBore PinBE WidthPE Width Bolt SizeWeightPrice/
Buy Now
Audi ADU 144mm043DP14144 50.61120mm24.94024.9403/8”570 $482.31
VW/Audi 1.8T043DQ14144 50.61120mm24.94024.9403/8”514 $385.66
VW/Audi VR6 164mm043DR14164 26.80020mm19.91019.9103/8”565 $590.31
VW/Audi ADU (5-Cyl)
VW/Audi G60 136mm
043DS17136 50.61122mm24.94024.940 540 $385.66
BMW M52B28/S52B32/M54B30/S52B30
005AX17135 48.00922mm21.8921.893/8”489 $577.71
Chevy LSJ ECOTEC  145.5mm012BC21146 52.12523mm23.98023.9803/8”550 $385.66
Ford Focus RS 5 cyl./
Volvo B5 143mm
044DW21143 53.00623mm25.65021.9503/8”582 $482.31
Cosworth YB 128.5mm011BP29129 55.01024mm25.96025.9603/8”557 $385.66
2L Duratec 146.25mm011BL16576 50.03521mm21.82018.0303/8”516 $385.66
3L Duratec 5.440"011BN16544 53.02521mm21.34021.3403/8”535 $577.71
2.5L KL 137.8mm028CE16138 56.07021mm21.23021.2303/8”580 $577.71
B16A 134.30mm015BR16134 48.01221mm23.80020.0703/8”495 $385.66
B18A/B 137mm015BR16137 48.00121mm23.77020.0703/8”501 $385.66
B18C 138mm015BS16138 48.00121mm21.72022.8603/8”500 $385.66
K20 139mm015BW17139 51.00022mm19.86019.8603/8”511 $385.66
K24 152mm015BX17152 51.00022mm19.86019.8603/8”542 $385.66
S2K/K24 Conversion 143.40mm015BX17143 51.00022mm19.86024.0003/8”526 $385.66
K20 139mm015BW17139LLightweight51.00022mm19.86019.8603/8”460 $385.66
K24 152mm 015BX17152II-BEAM
51.00022mm19.86019.8603/8”454 $385.66
D17 137mm015BT12137 48.00019mm19.81021.0503/8”463 $385.66
H22 143.15mm015BV17143 51.00022mm23.77023.7703/8”630 $385.66
Fit L-Series 149mm015BY10149 43.00018mm17.83017.8303/8”361 $385.66
Genesis 2L Theta 146mm016CA17146 51.00022mm21.84021.8403/8”540 $385.66
B6-ZE/BP 132.94mm028CC14133 48.00920mm21.84021.8403/8”490 $385.66
FS-DE 135mm028CD12135 51.00019mm21.79021.7903/8”530 $385.66
2.5L KL 137.82mm028CE16138 56.07021mm21.23021.2303/8”580 $577.71
L 2.3 DISI 150.55mm028CF17151 55.00822mm21.79021.7903/8”555 $385.66
L 2.3 DISI 150.55mm028CF19151 55.00822.5mm21.79021.7903/8”552 $385.66
MGB 1800 6.500"030CH15650 51.34022.63mm25.40025.4003/8”626 $385.66
4G63 6 Bolt 150mm032CI161506 Bolt Lightweight48.00921mm28.30028.3003/8”533 $385.66
4G63 7 Bolt 150mm032CJ171507 Bolt48.00922mm26.37022.8603/8”580 $385.66
4G63 7 Bolt 162mm032CJ171627 Bolt48.00922mm26.37022.8603/8”590 $385.66
4B11 143.7mm032CK21144 55.00523mm21.87019.8603/8”540 $385.66
4G93 133.35mm032CN12133 47.75219mm21.84021.8003/8”483 $385.66
4G94 153mm032CM121536 Bolt50.00819mm21.84021.8403/8”486 $385.66
RB25/26 121.5mm033CR16122 51.00721mm21.77021.7903/8”498 $577.71
VQ35 144.25mm033CV17144 55.00022mm20.78022.8603/8”538 $577.71
VQ37 149.5mm033CW17150 57.00022mm20.73022.8603/8”575 $577.71
SR20 136.25mm033CS17136 2.008”22mm22.73022.7303/8”524 $385.66
KA24 165mm033CP16165 53.00021mm24.69025.3003/8”624 $385.66
CA16DE/CA18DE 132.87mm033CO14133 48.00720mm24.13020.8803/8”550 $385.66
QR25DE 143mm033CQ14143 48.00020mm22.76022.8603/8”535 $385.66
TU5JP4 133.6mm034CY43134 48.66019.48mm23.88017.8303/8”499 $385.66
EJ20/25 Turbo 130.5mm039DD21131 55.00023mm21.39021.3903/8”533 $385.66
EJ25D Non-Turbo 131.57mm039DD21132 55.00023mm21.39022.8603/8”547 $385.66
M16/18 136mm040DE14136 45.00020mm23.80018.8003/8”440 $385.66
2JZ 142mm041DJ17142 55.00022 mm25.88025.4003/8”562 $577.71
2AZFE 149.5mm041DI17150 51.00022mm19.81019.8103/8”514 $385.66
C20XE 143.1mm042DO16143 52.00021mm26.37022.0003/8”524 $385.66
VW/Audi 1.8T043DQ14144 50.61120mm24.94024.9403/8”514 $385.66
VW ABF  159mm043DQ16159 50.61121mm24.94024.9403/8”565 $385.66
VW/Audi VR6 164mm043DR14164 26.80020mm19.91019.9103/8”565 $590.31
VW/Audi ADU (5-Cyl)
VW/Audi G60 136mm
043DS17136 50.61122mm24.94024.940 540 $482.31
B5 139.5mm044DW21140 53.00623mm25.65021.9503/8”570 $482.31
B5254 S60R 2.5L 20V 5cyl. 143mm044DW21143 53.00623mm25.65021.9503/8”582 $482.31
B230 5204/B5234/B5254 152mm044DV21152 53.00623mm29.46024.7907/16”726 $385.66

Sales/Tech Line: (603) 378-0090
Email: info@ImportPerformanceParts.net

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*All prices on this site are subject to change without notice. Import Performance Parts™ disclaims responsibility for any printing or typographical errors, and does not guarantee that all information is accurate.

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