K1 Technologies Connecting Rods

The best K1 Technologies parts are the application-specific H-Beam billet connecting rods in this collection, matched to your exact engine: sets for the Nissan SR20DE and SR20DET with ARP 2000 bolts, the 2007-2013 Mazdaspeed3, the Mitsubishi EVO X, and the 1994-2001 Acura Integra, plus a 92mm stroke billet crankshaft for the SR20. Connecting rods are never universal, so check your year, model, and engine code before ordering any internal part.

Connecting rods link the pistons to the crankshaft and take the full combustion load on every power stroke, which is why they are among the first internals addressed in a serious build. Shoppers compare design, fasteners, and exact length, then plan matching parts such as the wider Connecting Rods range and the Performance Crankshafts in this store.

K1 Technologies is the only brand in this collection, and its range here is focused almost entirely on forged-engine internals: H-Beam billet connecting rods and one billet crankshaft. The H-Beam design is the brand's performance rod format across these listings, and the Nissan SR20 set spells out the fastener detail shoppers look for, listing ARP 2000 bolts in the K1 H-Beam Billet Connecting Rods for the Nissan SR20DE and SR20DET. That combination separates a build-ready rod set from a basic replacement set.

Application coverage shows the brand's breadth in this category. Mazda owners get K1 Connecting Rods for the 2007-2013 Mazdaspeed3, Honda and Acura builders get sets for the 1994-2001 Integra including a VTEC-specific listing and Turbo Spec and Light Spec versions for the 2002-2006 RSX Type-S, and Mitsubishi builders get K1 Connecting Rods for the Mitsubishi EVO X 2008-2015. Nissan coverage runs from the SR20 sets and 92mm crankshaft to a 132.97mm H-Beam set of four for the Nissan L16 and rods for the 1989-1998 240SX, while early Mitsubishi Eclipse builders are split into 1990-1994 6-bolt and 1993-1999 7-bolt sets. K1 rods are commonly planned alongside pistons from ranges such as Wiseco and JE Pistons, since rods, pistons, and crank are normally balanced and clearanced as one assembly. For general buying questions, see Common Questions About Aftermarket Parts: Answered.

What is the difference between the Turbo Spec and Light Spec RSX rods?

Both are K1 connecting rod listings for the 2002-2006 RSX Type-S in this collection, offered as two different specifications for different build goals. Compare the full listing details for your build and check your year and model before choosing.

Can I install connecting rods without other engine work?

Rods are an internal engine part, so fitting them means opening the engine, and builders normally check clearances and balance the rotating assembly at the same time. Treat a rod set as part of a planned build and use an experienced engine builder.

Why are the Eclipse rods split into 6-bolt and 7-bolt?

Because the two Eclipse engine versions in the listings, 1990-1994 6-bolt and 1993-1999 7-bolt, use different rod fitments. Confirm which version your engine is before ordering, since the sets are not interchangeable by year alone.

Does K1 sell a crankshaft in this collection too?

Yes. Alongside the rods there is a K1 billet crankshaft with a 92mm stroke for the Nissan SR20DE and SR20DET, so SR20 builders can source the crank and rods from the same brand range here.