Gen II Billet Rocker Box


The Gen II incorporates a dual breather system for use on Evo, Twin Cam or Sporty.

Part of the design criteria was that the rocker box achieve our aesthetic goals but also sacrifice nothing in engine performance or reliability. To that end,  the Racedyne rocker box has several advantages.

Additional cooling fin surface area and air flow were added to help cool the heads and oil that end up in the rocker box. A very simple but highly effective scavenging check valve ensures optimum pressure evacuation and uses the stock external breather hardware. Special consideration was given to ensure that the sealing areas do not leak over time and all aluminum components are hard anodized for longevity.

The rocker box is made from billet 6061 T6 aluminum. This is much stronger than cast pieces ensuring reliable use for performance engines.

Gen II Billet Rocket Box

Updated Sealing Procedure

Designed for EVO, Sporty and TC

Billet 6061 T6

Included in package: 

	•	All mounting hardware
	•	Viton O-Rings
	•	Rocker shaft end plugs
	•	Revised breather system
	•	Rocker Box to head Gasket
 for EVO, Sporty and TC

New 2 Piece Rubberized Fiber TC, Evo and Late Sporty RB Base Gasket Available Separately Under Buy Now.New 2 Piece Rubberized Fiber TC, Evo and Late Sporty RB Base Gasket Available SeparatelyGen_II_Rocker_Box_files/2018%20Gen%20II%20SHEVOL%20Rocker%20Box%20Installation%20Guide%20Low%20Res.pdf

Gen II VTwin Rocker Box

Evo & TC: Black - Black with Polished Fins and Natural available for $695.00. Show Polish $995.00

Service kits include all gaskets, seals, breather spring and check ball $29.95 Shipping additional.

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2018 Gen II SHEVOL Rocker Box Installation Guide Low Res.pdfGen_II_Rocker_Box_files/2018%20Gen%20II%20SHEVOL%20Rocker%20Box%20Installation%20Guide%20Low%20Res_1.pdfGen_II_Rocker_Box_files/2018%20Gen%20II%20SHEVOL%20Rocker%20Box%20Installation%20Guide%20Low%20Res_1.pdfGen_II_Rocker_Box_files/2018%20Gen%20II%20SHEVOL%20Rocker%20Box%20Installation%20Guide%20Low%20Res_2.pdfshapeimage_4_link_0shapeimage_4_link_1