Spool RB26 - RB29 Stroker Kit with Custom CP Pistons
We carry a limited range of pistons for this kit in stock. If we don't have your exact requirements it will take 6-8 weeks to have pistons made.
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Nissan RB25/26 Stroker Kit:
- Spool Billet 4340 full counter weight 79mm Stroker Crankshaft
- Spool H or Drag PRO I Beam Forged Connecting Rods with ARP-2000 Bolts (ARP L19 Bolts available as an upgrade)
- CP Custom Pistons (rings, pins and locks included)
- 9310 0.200" Gudgeon Pins standard (0.250" Pins available as an upgrade)
We can supply custom CP Pistons in any bore size or comp ratio - email for details.
Full billet 4340 Nitrided and Balanced Crankshaft
Note: The standard RB26 capacity is 2568cc
Using the 79mm stroker crank, std length conrods and custom pistons, the displacement is increased as follows:
- 86.5mm bore and the 79mm stroker crank = 2750cc / 217cc increase
- 87mm bore and the 79mm stroker crank = 2818cc / 250cc increase
With the increased cubic capacity from the 79mm stroker crank, big increases in torque and low to mid range power are achievable. Boost will come on earlier in the rev range and peak power will increase.
CP pistons come with rings, pins and locks. The gudgeon pins are upgraded to 9310 hardened alloy steel with 4.5mm wall thickness.
Note: Clearancing of the cylinder block is sometimes required.
| Product Name | Spool RB26 - RB29 Stroker Kit with Custom CP Pistons |
|---|---|
| Brands | Spool |
| Engine | RB26 |
| Make | Nissan |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
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Disclaimer:
Product images are for description purposes only. Actual product may vary.
Shipping calculations available at checkout.
If you are unsure, get in touch by emailing [email protected], messaging us on Facebook, or phoning us at +61 7 5645 1333 (8am to 2pm AET).
What is included in a typical Spool engine kit?
Kits usually include pistons, rings, rods, bearings and related hardware depending on the engine family. Check the listing for exact inclusions.
Do I still need machining with a full engine kit?
Yes. The block must be honed and all clearances checked and set by your builder. Assembly should only occur after full measurement and verification.
What are the benefits of using the Spool RB26 - RB29 Stroker Kit?
The Spool RB26 - RB29 Stroker Kit increases the engine displacement, providing significant gains in torque and power, particularly in the low to mid range. The 79mm stroker crank allows for earlier boost onset and enhanced peak power, making it ideal for performance applications.
What machining is required for the Spool RB26 - RB29 Stroker Kit?
Clearancing of the cylinder block is sometimes required to accommodate the 79mm stroker crank. Additionally, ensure that the big-end and small-end of the conrods are honed to the correct sizes, and verify that the pistons have the appropriate bore clearance and ring gaps set by the engine builder.
Can I customise the pistons in the Spool RB26 - RB29 Stroker Kit?
Yes, the kit includes custom CP pistons that can be tailored to any bore size or compression ratio. If your specific requirements are not in stock, please allow 6-8 weeks for custom piston manufacturing.
What type of conrods are included in the Spool RB26 - RB29 Stroker Kit?
The kit comes with Spool H or Drag PRO I Beam Forged Connecting Rods, which are equipped with ARP-2000 bolts as standard. You also have the option to upgrade to ARP L19 bolts for enhanced performance.
What is the significance of the 9310 gudgeon pins included in the kit?
The 9310 gudgeon pins are made from hardened alloy steel with a 4.5mm wall thickness, providing increased strength and durability under high-stress conditions. This is particularly important for performance applications where reliability is crucial.
