Mercury Racing Engines - 575 GM 540 V-8 1986-1992

1:35 XR Lower Ratio Gears

These forged XR Lower Gears allow you to have a 1.50 upper XR gears and make your drive to a 1:35 set or 1:26 ratio over all. Bearing and seal kits not included. All drive parts have no warranty.

1-1/4" Bravo XR Replacement Prop Shaft with Blue Carrier

Install Order:

1. LOAD RING 
   
2. O-RING
3. LOAD CARRIER 
4. LOCK TAB 

Gear Set (19/16) Mercruiser 43-840898A3

Supersedes: 43-849348A3

Supercedes: 43-849348A3

This is a direct replacement for the flanged shaft (Mercury OEM's #939064, 93906A2, 8M0192274) inside the bell housing for a driveline setup with a Bravo drive. They are made from 4340 chromoly and actually weigh 0.2lbs heavier than the stock ones even though they are exactly the same dimensions. Made in the USA. 

Mercury XZ Bravo Gears Upgrade Kit 1:50 Ratio

You can now upgrade your standard Bravo upper to the NewXZ Gear Set from Mercury. This kit will come with all the bearings,seals, new clutch, shift fork, XZ gears. Correct shims are required and are an option if needed. Before you order this we need to know what shim is stamped on your case. Remove rear cover to see your stamp on the case. Any questions please call on our techs to help you locate it. Please review the ordering instructions to make sure you get the right shims with your kit.

Upper Gear Shaft

Upgraded Upper Gear Shaft, this shaft is more forgiving thanthe stock harden shafts to allow less twist and breaks.  Makesa great upgrade to any Bravo / XR / XZ drives.