Cv Joint Race, Race Prepped For 934 CV, Each

OVERVIEW

When you''re pushing the limits of off-road performance in a high-travel sand rail or a dedicated desert race car, the drivetrain is under constant duress. The EMPI Race Prepped 934 CV Joint Race is engineered specifically for those who understand that you cannot win if you do not finish. Standard CV components are often tight from the factory, which is fine for street use but can lead to catastrophic binding and overheating when subjected to the extreme angles and high-torque loads of off-road racing. This race-prepped inner race features precision extra clearancing, providing a "looser" fit that allows for superior grease circulation and thermal expansion during long-distance hauls across rugged terrain. By reducing the initial friction and allowing the ball bearings more room to navigate the tracks under load, this component significantly minimizes the risk of galling and seizure that often plagues stock setups.

Crafted from high-strength, race-hardened materials, this 934 inner race is designed to be a direct replacement or upgrade for original Lobro or EMPI 934 (Series 128) CV joints. In the world of air-cooled VW performance and custom off-road builds, the 934 CV is the gold standard for power delivery, and this "race only" component takes that reliability to the next level. Whether you are building a Class 1 race car, a heavy-duty Baja Bug, or a high-horsepower sand rail, using race-prepped internals is a cheap insurance policy against drivetrain failure. This unit is sold individually, allowing you to service a single joint or refresh your entire axle assembly with components that are built to withstand the most punishing environments on earth. Don''t settle for standard tolerances when your podium finish is on the line; upgrade to the precision and durability of EMPI''s race-hardened technology.

FITMENT

This component is designed for universal high-performance applications utilizing 934 Series (128mm) CV joints. Common fitments include:

• Sand Rails & Dune Buggies: Custom long-travel builds using 934 transaxle flanges and stub axles.
• Baja Bugs: Vehicles converted to 934 CV joints for extreme suspension articulation.
• Class 1 & Class 10 Race Cars: Professional desert racing chassis requiring Series 128 drivetrain components.
• Volkswagen Type 1 Conversions: Custom off-road applications with aftermarket 33-spline axles.
• Manx-style Buggies: High-horsepower street and dirt builds utilizing 934 drivelines.

SPECS

• Product Type: CV Joint Inner Race
• CV Series: 934 (Series 128)
• Preparation Level: Race Prepped (Precision extra clearance for high-heat/high-angle use)
• Spline Count: 33-Spline (Standard for 934 Axles)
• Material: Forged Chromoly Steel, Race Hardened
• Compatibility: Fits original Lobro and EMPI 934 CV Joint housings
• Finish: Precision Ground and Polished bearing surfaces
• Quantity: Sold Each (1 Required per CV Joint)
• Manufacturer Part Number: 16-2627-0

PRO TIPS FROM THE SHOP

Tip 1: Use High-Quality Synthetic Racing Grease

Because these races are prepped with extra clearance for racing, the choice of lubricant is critical. We recommend using a high-content Moly (Molybdenum Disulfide) synthetic grease, such as Red Line CV-2 or Swepco 101. These lubricants are designed to stay bonded to the metal surfaces even under the intense centrifugal force and high temperatures generated at 934 operating angles. Never mix different brands of grease, as the chemical additives can sometimes react and break down the lubrication properties, leading to premature wear on your newly prepped race.

Tip 2: Verify Proper Axle Float and Snap Ring Seating

When installing this 33-spline race onto your axle, ensure that the axle has sufficient "float" between the inner and outer CV joints. If the axle is too long, it will bottom out the race against the transaxle or stub axle, causing immediate failure. Always check your snap rings for a secure fit within the groove. In a race-prepped environment, we often recommend using heavy-duty spiral locks or high-tension snap rings to ensure the race stays exactly where it belongs, even when the suspension is fully cycled at maximum droop.

Tip 3: Orientation Matters During Assembly

While the race may look symmetrical to the untrained eye, pay close attention to the direction of the internal splines and the way the ball bearings seat into the cage. When assembling a race-prepped 934 joint, "clocking" the inner race to the outer cage correctly is vital for achieving the maximum possible angle without binding. Before final installation, cycle the joint by hand through its full range of motion. It should feel smooth and "loose" without any hard spots. If you feel any clicking or resistance, disassemble and re-check your alignment before putting the car in the dirt.