Upon riding the new Honda CB750 a few times, I knew I made a great choice. A KTM-fun bike made by Honda :) It is not perfect, but light and nimble, with an excellent torquey engine, and an incredible value. The first component I upgraded, one on which Honda saved on to make their budget, is the Seat.
I pulled all the stops and bought a Corbin! I had had any of their products, but their reputation made the sale. Within two weeks I got my custom seat in black with red stitching.
Installation
Corbin did not come with installation hardware, so I tried to re-use the two hex-head bolts. The OEM seat bucket is fitted perfectly to the frame and is mounted with two hex head bolts in the rear.
The Corbin bucket uses two metal bars attached to the fiberglass pan to reach the threaded frame locations allowing mounting with two rear bolts. Unfortunately, the two bars are not perfectly fitted and approach the bike frame at an angle. This causes bolts to not be aligned with threads and makes the installation very difficult given tight quarters.
The solution I came up with, before cross-threading the frame, was to buy M6x1.0 threaded rod, cut two 28mm lengths and pre-install them as studs. I used blue locktite, threaded them all the way into the frame and secured with a locktite-ed thin jam nut. Then I just lowered the seat onto the studs and secured it with nylock nuts. Easy, secure and removable.
I wish Corbin provided $3 worth of install hardware to make the install process simple and quick. As-is, it took an evening of cursing, sleeping on it and a store trip in the morning to get the needed bits.
Seat Comfort
The seat feels amazing. It is very profiled and has a convex shape. There is a strange rounded hump in the front on which part of one’s tail bone rests - and it rests SO comfortably. When riding for hours, I don’t feel any pressure points. When stopped at a light, the rounder profile doesn’t present a seat edge pressure points on inner thighs. The seat is leather with the perfect amount of texture from stitching lines to provide ideal support, but allowing for easy weight shifting.