Your cart is empty

Add performance parts, kits, or accessories to get started.

PWC Fitment Results

2021 Yamaha GP1800R HO Parts & Performance Upgrades

Browse compatible parts for 2021 Yamaha GP1800R HO, including performance upgrades, maintenance items, and Calas-approved components.

No compatible products found for 2021 Yamaha GP1800R HO

This fitment may not have assigned products yet. Try changing your watercraft, browsing by make, or contacting Calas for help confirming the right parts.

Change PWC Browse Yamaha Parts View All Products Contact Calas

Explore More

More Ways to Build With Calas

The shop is only part of the system. Explore fitment tools, build content, product education, and Calas gear.

PWC Parts Finder

Start with your year, make, and model to narrow the catalog to compatible parts.

Watch the Builds

Calas World YouTube

See builds, installs, shop updates, race footage, and product content from Calas Performance.

Built From Experience

About Calas

Learn why Calas Performance is built around real-world testing, proven parts, and serious PWC builds.

Calas Gear

Shop Calas apparel, merch, and gear built for the performance community.