SpeedFactory K24 H-Beam Connecting Rods

If you're building a K24 to hold boost, stock rods are the first thing you throw away. The SpeedFactory Racing K24 H-beam connecting rods are the budget-honest answer: forged 4340 chromoly, rated for over 900 hp, and priced so you can spend the savings on pistons and tuning. They run in everything from 400 whp street K24s to full drag builds, and they're light enough at 563 grams that high-revving all-motor guys use them too.

What It Is and Why It Works

This is a set of four stock-length (152.019mm center to center) H-beam rods for the K24A and K24Z engine families. Each rod is forged from SAE 4340 chromoly, 100% CNC machined, multi-stage heat treated, magnafluxed, and shot-peened to relieve stress in the metal. Precision alignment dowels locate the rod caps, keep the big end bore round, and eliminate cap walk under load. The pin end runs a bronze alloy bushing with dual offset oiling holes for floating wrist pins.

SpeedFactory ships them with 3/8 inch ARP2000 rod bolts rated at 220,000 psi, plus ARP assembly lube and instructions in the box. Each set is weight matched to within 1 gram, so your machine shop starts from a balanced baseline instead of grinding beams to match. Because these are stock length, they drop into any standard K24 bottom end, including the K24 block with K20 head combos that power half the EG, EK, and DC2 swaps we sell parts for.

Specs

Fitment

These fit any K24A or K24Z bottom end regardless of what chassis it ends up in. Factory K24 applications include the 2003-2012 Honda Accord, 2004-2014 Acura TSX, and 2002-2012 Honda CR-V. They're just as at home in a swapped EG or EK Civic, DC2 Integra, or any K24 Frankenstein build running a K20 head.

The pin end fits most aftermarket pistons without additional machining. These rods do not work with OEM style pistons, period. If you're keeping stock pistons, these are not your rods.

What to Know Before You Buy

Plan your pistons and rods as one purchase. The bushed pin end is built for aftermarket forged pistons, so if you order rods now and think you'll reuse the factory slugs, you'll be placing a second order before the block goes together. Most K24 builds we see pair these with forged pistons, King or ACL bearings, and ARP head studs, and that combination handles serious boost on a proper tune.

The included ARP2000 bolts are the right hardware for the vast majority of builds, including boosted street cars and 8,500 rpm all-motor setups. If you're chasing a 9,000+ rpm rev limit, the common move is stepping up to a stronger rod bolt spec, so talk to your engine builder before final assembly. Either way, torque them with the included ARP lube and a stretch gauge, not by feel.

Treat these like any forged rod set: have your machine shop verify bearing clearances and double check the balance during assembly even though SpeedFactory matches each set to within a gram. And if your build is a K20 head on a K24 block for a swap car, these stock-length rods are exactly what that recipe calls for. Grab bearings and head studs in the same order and save yourself the downtime.