Onguard Bull Mastiff 8103 Padlock

Onguard Bull Mastiff 8103 padlock for V-twin motorcycles, a heavy-duty keyed lock with minimal pry points and a tight shackle-to-body design. Comes with five F-style keys and smooth one-handed rotary operation for quick securing on the road or at home.

Features

• Keyed padlock with rotary operation
• Tight shackle-to-body clearance resists prying and cutting
• One-handed operation for convenience
• Five heavy-duty F-style keys included
• 6.5 in length fits most motorcycle disc brake rotors

Specifications

• Brand: Onguard
• Manufacturer Part #: 45008103
• UPC: 768661281038
• Length: 6.5 in
• Width: 4 in
• Height: 1.5 in
• Weight: 6.6 lbs
• Country of Origin: China (Mainland)

Fitment

Fits V-twin motorcycles including Harley-Davidson and Indian Motorcycle models with standard disc brake rotors.

Frequently Asked Questions

Will this fit my Harley or Indian?

Yes — the Bull Mastiff 8103 is designed for V-twin motorcycles including Harley-Davidson and Indian. Verify your disc rotor diameter fits the 6.5 in length.

How many keys come with it?

Five heavy-duty F-style keys are included so you can keep spares on hand.

Can I operate it with one hand while wearing gloves?

Yes — the smooth rotary operation is designed for one-handed use, even with gloves.

Is this padlock weatherproof?

The heavy-duty construction resists corrosion, but for maximum longevity in wet climates, store indoors when not in use and occasionally apply a light lubricant to the mechanism.