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Universal Exercise Bike 3-Hole Adaptor Kit
Part Number BSCIM-UNI3
. Universal Exercise Bike 3-Hole Adaptor Kit
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Made in USA - Exercise Bike Seat Adaptor Kit - Fit any listed bike seat on your 3-hole mounting exercise bike! Guaranteed Or Your Money Back!

Custom Adaptor Kit

The Custom Adaptor Kit includes a mounting plate made to your specifications. No matter what model of exercise bike or the shape of the mount, now you can mount any bicycle seat with rails to your exercise bike

Use any bicycle seat on your exercise bike with this Custom Adaptor Kit. Made in USA.

  • Fits exercise bike models with 3 hole/bolt seat mountings, including: Tunturi, ProSport, Fitness Quest, Life Cycle, Life Fitness, Weslo and Vital Fitness Exercise bikes - and more ... (see the comprehensive exercise bike model list)
  • Mount any seat with rails
  • Heavy-duty - made of steel for durability and strength
  • Easy installation
  • Adaptor Kit includes: Adaptor plate, installation hardware and 7/8" post clamp

Purchase an Adaptor Kit with your seat of choice.  Exercise Bike Seats

Call us for instructions on how to submit measurements and/or drawings of your exercise bike seat mounting (855) 855-1976

Note the model of exercise bike on the order form.


Exercise bikes are the old standbys of the home fitness world; they've been around longer than treadmills, elliptical trainers, rowing machines and skiers. Experts say exercise bikes are safe, effective, and as easy to use by seniors and pregnant women as by the most avid fitness enthusiasts. The stress on knees and joints is less on a bike .

Customer Reviews
Perfect Fit!
The adaptor worked perfectly on our 30-year-old and still working great Tunturi.
Reviewed by: Shawna from Chicago. on 3/9/2018
Mr. & Mrs
The adapter works perfectly with the model stationary bike that we have.
Reviewed by: Dave & Sherry from Iowa. on 1/31/2018
Reviewed by: LYN from jackson hts ny. on 1/31/2018
Customer service very helpful. Gave price of what was on website. Told them what brand name of my exercise bike and recommended this adaptor. Fits perfectly.
Reviewed by: bill from los angeles. on 2/22/2017
The item was exactly as described and fitted my rebook bike seat post perfectly. Took about 10 mins to fit and assemble, and is secure and so far, stood up well to my weight and use. It arrived very quickly too, especially considering it was coming from the USA. It provides a much wider choice of seats making my exercise bike useful again. Highly recommended.
Reviewed by: Ian Bignell from London, UK. on 5/23/2016
3 hole adapter kit
I AM SO HAPPY i FOUND THIS. I CAN PUT ANY KIND OF BICYCLE SEAT ON MY EXCERCISE BIKE. VERY EASY TO PUT ON. WE LOVE IT!! very quick shipment when I ordered and the people at customer service are very friendly and helpful.
Reviewed by: CONNIE ENDRES from WAUNAKEE, WISC.. on 4/20/2016
Easy to assembly with the seat provided.
Reviewed by: J. Finnell from Idaho. on 12/29/2015
This universal adaptor works perfect with the seat that I purchased for my exercise bike.
Reviewed by: Kathy Bowles from McLean, Virginia. on 11/23/2015
This adaptor was exactly what I needed to adapt a better seat to my ancient Tunturi exercycle. I was so pleased to find such an item existed.
Reviewed by: Len McGlothlen from Simi Vallsy, CA. on 8/9/2015
This adaptor works perfectly with my seat!
Reviewed by: jacques from montreal. on 4/6/2015
This adaptor works well with the seat I ordered
Reviewed by: Robert Kivi from Yakima, WA. on 2/2/2015
Feature: Sporting Goods > Exercise & Fitness > Cardio Machines > Exercise Bikes
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