Red Line Gear Oil - W/Shockproof 80w 1 QT (12/Case Sold Ea)

Red Line Gear Oil 80W with ShockProof® additive package for V-twin motorcycle transmissions and wet-clutch engines. Engineered to cushion gear impacts while maintaining low drag for smooth shifting and reliable clutch operation.

Features

• ShockProof® microscopic solid medium reduces gear tooth wear
• Optimized for wet-clutch motorcycle transmissions
• Consistent shifting performance across temperature ranges
• 1 quart bottle

Specifications

• Brand: Red Line
• Manufacturer Part #: 42704
• UPC: 083522427043
• Viscosity: 80W
• Size: 1 quart
• Weight: 2.19 lbs

Fitment

Fits V-twin motorcycle transmissions and engines requiring 80W gear oil, including Harley-Davidson and Indian Motorcycle models with wet-clutch setups.

Frequently Asked Questions

Is this safe for wet-clutch motorcycles?

Yes — Red Line Gear Oil with ShockProof is specifically formulated for wet-clutch transmissions. It will not affect clutch friction or engagement.

Can I use this in my Harley primary drive?

This is gear oil for the transmission. Verify your bike's primary drive specification — some Harleys use different weights or synthetic blends in the primary.

How often should I change the oil?

Follow your motorcycle's service manual. Most riders change transmission oil every 5,000–10,000 miles depending on riding conditions and bike model.

Will ShockProof help with hard shifts?

ShockProof reduces gear tooth impact stress, which can smooth harsh engagement if caused by worn synchros or cold oil — but severe shift problems may indicate internal wear.