Mastiff 8021 Chain Lock
$ 134.95
In stock
Mastiff 8021 Chain Lock
Part #: 57-9618
Onguard quality guaranteed.
Available for ship to store.
Mastiff 8021 Chain Lock
Product Specifications
| Weight | 10.201 lbs |
|---|---|
| Dimensions | 17.5 × 8.5 × 6.5 in |
| Part Number | 57-9618 |
| MPN | 45008021 |
| Brand | Onguard |
| UPC | 768661280215 |
| MAP Policy | true |
| Country of Origin | China (Mainland) |
Product Description
Mastiff 8021 Chain Lock is available now from Knobtown Cycle, your Kansas City motorcycle parts specialists.
Key Features
- 6′ x 10mm (0.39″) titanium reinforced hardened square link chain mated to an integrated X2P Dual Lock
- Double rubber cover for better protection against bumps and hits. 110cm x 10mm (3.57′ x 0.39″)
- 5 laser cut keys (1 micro-light and 4 extra grip keys) Micro-light key projects a bright white beam
Product Specifications
- Part Number: 57-9618
- Brand: Onguard
- Weight: 10.201 lbs
- UPC: 768661280215
Available at Knobtown Cycle
Shop online or visit our Kansas City showroom. Fast shipping available on all orders! Free Ship to Store!
Part Locations
| Location | Available |
|---|---|
| Ashley (IN) | 0 |
| Elizabethtown (PA) | 0 |
| Boise (ID) | 0 |
| Midway (GA) | 0 |
| Fresno (CA) | 0 |
| Jessup (MD) | 0 |
| Midlothian (VA) | 0 |
| National Total | 0 |
Stock levels last updated: March 20, 2026 6:39 PM
Professional Installation Available
Knobtown Cycle offers professional installation services. Contact us via a service request to learn more.
Thank you for Shopping at Knobtown Cycle!
When you shop with us, you’re not just buying motorcycle parts — you’re supporting a small, family-run business rooted right here in the heartland of America. Every order helps us keep riders on the road and fuels our passion for serving the motorcycle community.
From all of us at Knobtown Cycle, thank you for choosing local and riding with us.
Product Reviews
Need help with installation? Our Service Department based in Kansas City, Missouri is here for you. Fill out a Service Request and lets get you rolling!

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