I can't make out the serial number on them so I can't look them up. How can I tell if these are XR or regular Bravo. I want to order both upper and lower seal kits. One has a sticker from Quicksilver Remanufacturing that says Part# 5231200R1 which leads me to believe its a regular B1 but not 100% sure. Can anyone here tell? Thanks

Regular bravo 1 judging by the spanner on the input

Some added info - the Propshaft XR is 1.25 " - the bravo 1 and X are not as they are 1 inch propshafts. Also the XR has Billet anodized bearing carrier (blue color) - also reinforced top cap that is ribbed for cooling and for to better support the bearings under higher loads / rpms. The X has a ribbed cap as well. Also heavy duty caged rolling bearing

internally XR heavy duty forged gears in which precision shimmed assembly with net forged steel straight bevel gears of course they say for improved strength / durability. Hmmm rethinking that one.

You could also call Merc remanufacturing and give them that part # posted and they can tell you exactly what you have . As you know they are remans thru Merc. Just saying.

Just pull the top or back cap off and look at the gear set to see if they are straight cut, or helical cut gears. Straight cut = XR

Yea I don't have the finned caps. First sign they weren't XR. But the IMCO shower and bracket threw me off. I'll measure the shaft thanks for the input.

Nowadays all you need to do is just google search the part number which is actually the Model Number. 5231200R1 has a gear ratio of 1.50:1

Service Literature for MERCRUISER BRAVO 1) 1.50:1 REMAN DRIVE BRAVO 1) 1.50:1 With dual water pick-up.
PARTS CATALOGS
• 90-880951 00 - Bravo I - II - III

http://www.marinepowerservice.com/Bo...ctID/39171.cfm
Parts catalog: http://www.boats.net/parts/search/Me...0R1/parts.html

Conversion kits are out there that put a 1.25 shaft and larger bearings to existing lower gearset .the carrier anodizing can be absent on the swaperoo. Still gonna have a b2 looking prop hub though.pull the top cap and stopp fogging the camera lens lol .thought the beer was getting to me for a minute
i know i would want to see what it looks like up there reguardless of its a xz x or hybrid