You are looking at one Pro-tek CNC billet brake fluid cap that replaces the stock plastic Rear Brake Fluid Master Cylinder Reservoir Cap on a 1984-1985 Yamaha RZ350 and 1988-1990 Yamaha FZR400/400S models.
This one cap comes available in 4 brite dipped anodized colors -red, blue, gold and silver.
cap is made from 6061 T6 billet aluminum, is brand new still in
original packaging, manufactured in the USA, and comes complete with
This round threaded rear brake fluid reservoir cap (Pro-tek Part No. RC-175) is 2.25" x .60" and has the word Pro-tek engraved on it twice.
Please measure your rear cap on R1 and R6 models. Yamaha often uses
newer year model reservoirs and sometimes the cap on leftover models is a
smaller 1.75" round cap (Pro-tek Part No. RC-150).
The retail price for this cap is $25.
are not "NO Named Brand" cast aluminum caps machined later to look like
billet (made in China) that are all over the Internet. These are
American made from solid billet aluminum, 100% CNC machined from a name
you can trust - Pro-tek - a leader in the motorcycle industry for over
1984-1985 Yamaha RZ350
1988-1990 Yamaha FZR400/400S
-Condition: 100% Brand New
-Material: 6061T6 Aluminum
-Available Colors: Red, Blue, Silver, Gold
-Surface finish: Brite Dipped Anodized
-Feature: 100% CNC manufactured with Pro-tek engraved twice
-Size: Outer diameter 2.25" (50.17mm) with Height .60" (15.24mm) (1)
-Placement on vehicle: Rear
-Contents of package: One Rear brake fluid reservoir cap
-Item is easy to install without any instruction.