*These kits can still be optioned with Wide Journal and V2 connecting rods*
The RB25 is the baby brother of the RB26. Largely goes unnoticed and its potential is underestimated. However, did you know that our RB26 strokers fit directly into the RB25 block? The crankshaft and the connecting rods are all the same, only difference is in the piston!
There was a significant need in the market for a kit that increases the capacity of the RB26, thus, we created our RB26 2.8L stroker kit. To date, the success of the RB28 kit can be seen on the circuit with various Open Class World Time Attack Challenge competitors utilising our kits. This application is arguably the most difficult application for any set of components to endure, given the punishing nature of circuit racing, testing the ability to maintain a certain level of performance over extended periods of time. Additionally, plenty of builds run the RB28 kit on the drag strip with considerable success and these kits can also be seen in street driven applications.
The kit consists of our Nitto/CP pistons in 86.5mm/+0.020” and 87mm/+.0.40” bore sizes. These pistons are cut from low silicon content 2618 material in CP’s Turbo HD forging. In addition to these, the pistons are complete with Nitto custom specifications, PVD rings, 9310 gudgeon pins, accumulator grooves and friction reduction grooves.
The connecting rods are our robust I-beam design. Made from double melted forged billet 4340, this connecting rod features a stout I-beam design that has proven time and again to be capable of holding considerably high power without the added cost of the V2s. These connecting rods come with 3/8 ARP 2000 rod bolts as standard, with the option to upgrade to Custom Age 625+.
Completing the kit is the 4340 billet crankshaft in 77.7mm stroke. This crankshaft has been purposely designed with strength and high power applications in mind. The crankshafts are an immaculate piece with precision manufactured knife edging to reduce weight and cut through crank case oil mist with ease. This enables the crankshaft to rev freely and easily.
