Nissan RB26 Billet Cylinder Block by Bullet Racing.

The Bullet RB26 to suit Nissan RB26 applications has been proven in World Time Attack competition.
This product has vastly improved block rigidity and improved deck thickness over the stock unit. Combined with increased head stud diameter this product delivers exceptional head sealing qualities.
Distortion of cylinder bores and crank tunnel is dramatically reduced through design improvements and a Bullet 4 bolt main cap system.
This product offers significant weight savings and has minimal modifications to directly replace the standard block.

They are available in 2 variations:

Name of product: RB26 (Nissan RB26) Actual weight: 40kg Stock block weight in comparison: 70kg (N1) Block material: 6061 aircraft grade billet aluminium.
Design improvements: 4 bolt mains, increased block deck and cylinder wall thickness. Performance sleeves fitted Studs included: 1/2” Head and 7/16” Main
Modifications required to fit: Remote Oil Filter Kit
Modifications to head required: Drill out head stud holes to 14mm.
HP rating: 1800*
Significant benefits: Weight saving, significantly increased rigidity and durability. May be bored to 89mm Finish: Raw machined
Options Available: Bullet Fire Ring Head Sealing System

For more info on Nissan RB26 Billet Cylinder Block please go here.

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Bullet has been in business for more than 20 years and has built an enviable reputation as a premium motorsport engineering house. In the last 15 years we have invested in cutting edge DMG Mori and Haas 4 axis CNC machinery, CAMplete Port CNC Porting Software, Solidworks 3D modelling software, SolidCAM CNC Programming software, and recruited staff with the knowledge and experience to create and develop world-beating new products.

Along with our manufacturing capability, our combined decades of experience with our SuperFlow flow bench and engine dynamometer enables us to build and tune engines that are fully proven and ready to race.


  • CAD (Computer Aided Design) / CAM (Computer Aided Manufacture)

  • Precision CNC machining

  • Finite Element Analysis

  • New product development

  • Bespoke engine building and dyno tuning

  • Largest CNC Head porting program library in Australasia

Discriminators (points of difference)

  • In business more than 20 years

  • More than 100 years combined industry experience in our workshop

  • Comprehensive in-house facilities means no need to outsource

  • Decades of experience in CAD/CAM

  • Export to anywhere in the world

  • Manufacture individual components up to turn-key engines