After Spanish manufacturer Montesa decided to withdraw from competition, Francesc “Paco” Bultó left the company (along with most of the racing department employees) and decided to start his own motorcycle company in 1958, with the brand an amalgamation of his own surname Bultó and his nickname Paco. With time, Bultaco became best known for its off-road competition bikes, such as the Sherpa, Matador, and Pursang.
One of the rarest Bultacos ever built was the Tiron (Model 73), which was only offered in 1971.
Basically a tiny version of the Sherpa, the Tiron is a trials bike with ergonomics best suited for younger riders and the 100cc engine from a Lobito.
It is estimated that roughly 300 were built, and most were given to the best Bultaco dealers in the US.
This example is VIN: 7300310. The seller acquired it in October 2025.
During his ownership, the seller has only started the bike, he has not ridden it. There is no odometer, true mileage is unknown.
The seller is a well-known restorer of Bultacos in Southern California. This was on of 11 Bultaco he acquired from a collection in Las Cruces, New Mexico last year.
Maintenance:
The bike was restored some years ago so I went over all the systems.
New fuel lines and other rubber parts replaced. Complete check over and full cosmetic detailing. Bike starts easily and runs perfect.
Mechanical Issues:
The seller states that the lights do not work.
Modifications:
This bike is a excellent example of an original 1971 Bultaco Tiron. Stainless steel spokes.
Inside of the tank:
It is riding on Pirelli tires that have aged out.
Cosmetic Blemishes: please see the album in the “Photos” tab for all known cosmetic blemishes. Here is a selection:
“This was an older restoration but very well done. It used all OEM parts and everything is correct as it should be. Excellent paint, chrome, and polishing. All hardware replated. Please look closely at the detailed photos to see the level of finish.”
Currently located in Vista, California, this Bultaco is offered on a Bill Of Sale only.
Have any Tiron 100 stories or questions about this listing? Let us know in the “Comments” tab!
Additional Information
Location
Vista, California
Year
1971
Make
Bultaco
Model
Tiron 100
Mileage
1000
VIN
M-7300310
Title
Bill of Sale Only
Title State/Country
N/A
Private Party/Dealership
Private Party
Additional Charges
No
Total Bids Placed: 31
Auction has ended.
Auction expired without reaching reserve price.
Highest bidder was: a**h
After the auction ended, the seller accepted an offer of $4,815 including buyer fees.
Bidder Name
Bidding Time
Bid
Auto
a**h
August 15, 2026 9:19 am PDT
$3,655
m*******s
August 15, 2026 9:01 am PDT
$3,555
a**h
August 15, 2026 9:01 am PDT
$3,500
Auto This was automatically placed for a bidder with a higher proxy.
a**h
August 15, 2026 8:57 am PDT
$3,400
Auto This was automatically placed for a bidder with a higher proxy.
m*******s
August 15, 2026 8:57 am PDT
$3,300
a**h
August 15, 2026 7:29 am PDT
$3,099
t**************r
August 15, 2026 7:29 am PDT
$2,999
Auto This was automatically placed for a bidder with a higher proxy.
t**************r
August 15, 2026 7:28 am PDT
$2,905
Auto This was automatically placed for a bidder with a higher proxy.
a**h
August 15, 2026 7:28 am PDT
$2,805
t**************r
August 15, 2026 7:28 am PDT
$2,600
a**h
August 15, 2026 7:27 am PDT
$2,500
t**************r
August 15, 2026 7:27 am PDT
$2,499
Auto This was automatically placed for a bidder with a higher proxy.
t**************r
August 15, 2026 7:25 am PDT
$2,100
m*******s
August 15, 2026 7:23 am PDT
$2,000
t**************r
August 15, 2026 7:23 am PDT
$1,999
Auto This was automatically placed for a bidder with a higher proxy.
t**************r
August 15, 2026 7:01 am PDT
$1,800
s*********3
August 15, 2026 7:01 am PDT
$1,700
Auto This was automatically placed for a bidder with a higher proxy.
s*********3
August 15, 2026 7:01 am PDT
$1,600
Auto This was automatically placed for a bidder with a higher proxy.
t**************r
August 15, 2026 7:01 am PDT
$1,500
s*********3
August 14, 2026 8:27 pm PDT
$1,300
g********r
August 14, 2026 8:27 pm PDT
$1,200
Auto This was automatically placed for a bidder with a higher proxy.
g********r
August 14, 2026 7:59 pm PDT
$1,157
x***8
August 14, 2026 6:31 pm PDT
$1,057
a**h
August 14, 2026 6:31 pm PDT
$1,000
Auto This was automatically placed for a bidder with a higher proxy.
a**h
August 14, 2026 7:22 am PDT
$850
g********r
August 14, 2026 7:22 am PDT
$750
Auto This was automatically placed for a bidder with a higher proxy.
g********r
August 13, 2026 2:32 pm PDT
$657
Auto This was automatically placed for a bidder with a higher proxy.
x***8
August 13, 2026 2:32 pm PDT
$557
g********r
August 8, 2026 4:46 pm PDT
$400
c***********e
August 8, 2026 4:46 pm PDT
$300
Auto This was automatically placed for a bidder with a higher proxy.
