CMI Precision Billet Roller Rocker Arm Kit — 1.4:1 Ratio | Air-Cooled VW

CMI Precision Billet Roller Rocker Arm Kit — 1.4:1 Ratio | Air-Cooled VWWhen you're running big lift and high RPM, the stock stamped rockers are a liability these are the answer. CMI's Precision Billet Roller Rocker Arm Kit (1. 4: 1 ratio) is a track tested, fully machined valvetrain assembly with forced feed oiling and DLC coated shafts, built to survive extreme lift while keeping the valvetrain cool. The 1. 4: 1 ratio is identified by blue anodized end caps. Features 1. 4: 1 rocker ratio (blue anodized end caps) Forced

When you're running big lift and high RPM, the stock stamped rockers are a liability — these are the answer. CMI's Precision Billet Roller Rocker Arm Kit (1.4:1 ratio) is a track-tested, fully-machined valvetrain assembly with forced-feed oiling and DLC-coated shafts, built to survive extreme lift while keeping the valvetrain cool. The 1.4:1 ratio is identified by blue anodized end caps.

Features

• 1.4:1 rocker ratio (blue anodized end caps)
• Forced-feed oiling — oil routed through the pushrods to the shafts and sprayed onto the roller tips
• Rocker arms machined from 7050-T651 aluminum, hard-anodized with Teflon seal
• 9310 steel shafts with Diamond-Like Carbon (DLC) low-friction coating
• 3/8" H13 tool steel adjusters with ball cups and titanium 12-point lock nuts
• Grade 12.9 mounting studs with 7075-T651 aluminum blocks and spacers
• Constant oil bath cools the valve springs and reduces friction at high RPM

Specifications

• Ratio: 1.4:1
• Rocker body: 7050-T651 aluminum, hard anodized
• Shaft: DLC-coated 9310 steel
• Adjusters: H13 tool steel with titanium lock nuts
• Blocks & spacers: black anodized 7075-T651 aluminum
• Mounting studs: Grade 12.9

Fitment

CONFIRMED: VW Type 1 air-cooled engines — Beetle, Bus, Karmann Ghia, Type 3, Thing — in performance and racing builds running high-lift cams. Verify rocker geometry, pushrod length, and valvetrain clearance for your specific cam and head combination. NOT CONFIRMED: Type 4 engines.

Questions & Answers

What ratio is this kit? 1.4:1, identified by blue anodized end caps. The 1.5:1 version has black caps.

How does the oiling work? Oil is force-fed through the pushrods to the DLC shafts and sprayed onto the roller tips for constant cooling and low friction.

What are the rockers made of? 7050-T651 aluminum, hard-anodized, on DLC-coated 9310 steel shafts.

Will these fit my build? They fit Type 1 engines; verify geometry, pushrod length, and clearance for your cam and heads.

Is this a CMI product? Yes — CMI Precision, sold by Washburn's Metal.

Prop 65 Warning

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and reproductive harm. For more information, go to www.P65Warnings.ca.gov.