1976 Kawasaki KZ Pro Street Bike Custom

SOLD FOR: $12,840

Seller accepted post-auction offer.

This auction has ended.


Additional photos of this Kawasaki are available here for your perusal.

This heavily-customized motorcycle started as a Kawasaki Z1, one of the most important bikes of the 70s. The Z1 has a fun story – Kawasaki thought they were going to be first to market with a 4 cylinder 750cc sport bike…and then Honda blew them away with the CB750. Kawi wisely decided to go bigger instead, and the 903cc powerplant impressed the press and customers with 82 horsepower. In their home market of Japan, the government mandated a displacement limit of 750cc, so Kawasaki created the smaller Z2 instead.

This example is VIN: Z1F505443.

The odometer shows 35,100 miles, however “since the full Pro Street Build and the new engine, the bike has less than 100 miles.”

The seller is Johnny Bohmer of Johnny Bohmer Proving Grounds. He notes that “the engine, carbs and chassis setup was done by me in house and has less than 100 miles since completed. The first head torque, valve adjustment and oil change was done at 60 miles. The next service should be performed around 1,000 miles.”

“Freshly built 1,260 cc engine with the following:
New MTC pistons and rings, pistons and cylinder head properly CC’d with necessary gaskets to have a final compression ratio of 10.5 to 1 creating optimal squish rate for this setup at .040
Block had custom bushings made for cylinder head studs to alleviate oil pushing through the stud area, this eliminates the need for epoxy on the block
Ignition timing set across the board at 39 degrees with a Dyna S ignition
Ported and polished J model cylinder head, 32mm stainless steel intake valves and 38.5mm oversized exhaust valves sunk to the proper depth so there is .050 valve to valve clearance.
Andrews 440/450 lift cams. Intake degreed at 111.5 and exhaust degreed at 112.5 with proper, under the bucket shim valve adjustment.
Intake cam is 450 lift/263 duration
Exhaust cam is 440 lift/265 duration
Welded and balanced, Pierson crankshaft
Backcut transmission
Offset countershaft sprocket with outer bearing support cover
Hydraulic clutch, APE performance clutch pusher bearing, APE KZ extra plate heavy duty clutches and springs.

Brand new 34mm Mikuni carburetors with brand new K&N filters, carbs jetted properly for the engine with custom needles and jets.

Front end raked, custom drilled front wheel.

Custom rear shocks, custom welded 18” Kosman rear wheel with brand new 200 Cobra tire, new chain and sprockets.

Grimeca rear master cylinder, custom drilled rear rotor, Brand new, custom DG rear chromoly 4” over swingarm.

Brand new fuel tank, fender and bodywork with stunning new candy dark red paint, powdercoated black frame. Vance & Hines sidewinder 4 into 1 exhaust. This bike is loaded with lots of stainless mounting hardware, billet footpegs and many other billet aluminum parts.

The seller sums up his bike by saying, “this Pro Street motorcycle runs and rides fantastic and is very fast. The engine is making approximately 135 RWHP and should send the bike through the ¼ mile in 10.5 seconds with a good rider. This is an old school motorcycle pro street build that is not designed for daily commuting. The engine should be used mainly for evening, cool weather use, or the drag strip. If driven in extremely hot daytime conditions, the bike should keep moving and not sit at long traffic lights running for extended periods of time as with any big CC air cooled motorcycle. This bike really turns heads and is not just for show, it has plenty of go!”

Cosmetic Blemishes:
The seller notes “minor surface rust on #3 Vance & Hines header pipe near the collector and a small drop of superglue spilled on the right hand side of the seat towards the rear that needs to be removed, I left it for fear of damaging the upholstery upon removal.

He adds that the tachometer is not working, it needs a new cable and drive.

Inside of the tank:

Currently located in West Palm Beach, Florida, this Kawasaki is offered on a clean Florida title. Have any questions about this listing? Let us know in the “Comments” tab!

Additional Information


West Palm Beach, Florida













Title State/Country


Private Party/Dealership

Private Party

Additional Charges


Total Bids Placed: 9

Auction has ended.

Auction expired without reaching reserve price.

Highest bidder was: pkight

After the auction ended, the seller accepted an offer of $12,840 including buyer fees.

Bidder Name Bidding Time Bid Auto
pkight July 20, 2022 4:49 pm $4,080 Auto
rccgrant July 20, 2022 4:49 pm $3,980
pkight July 19, 2022 8:57 am $3,655
rccgrant July 19, 2022 8:57 am $3,555 Auto
rccgrant July 19, 2022 8:16 am $1,900 Auto
Andyswine July 19, 2022 8:16 am $1,800
rccgrant July 16, 2022 1:36 am $1,655 Auto
Andyswine July 16, 2022 1:36 am $1,555
rccgrant July 15, 2022 5:02 pm $1,000
Auction started July 15, 2022 7:10 am
Notify of
Oldest Most Voted
Inline Feedbacks
View all comments

Shipping Information

Continental US:
Haul Bikes will ship anything sold through Iconic for a starting rate of $750 in the Continental US (prices may increase in rural markets), and Iconic will handle the paperwork on your behalf. You do not need to crate your bike or drain the gas/disconnect the battery if you go with Haul Bikes. We are glad to work with the shipper of your choice as well, but you will have to arrange it.

Please note:

  • spares/extras will have to be shipped separately via FedEx or similar.
  • the fee includes $15,000 of insurance with a $500 deductible. Additional insurance can be purchased at a cost of $50 per additional $5,000 of value.
  • additional details can be found here

Southern California
On a case-by-case basis, we can transport motorcycles in our van.

We are located in Santa Monica, California 90405.
Local Rates (one way):
0-50 miles: $150
50-150 miles: $300

Please contact concierge@iconicmotorbikes.com for a quote.

We recommend TFX

$1,500 for Los Angeles, CA to Canada is a ROUGH ballpark, please contact TFX for an exact quote including shipping and customs.

Europe and Asia:
We recommend Shippio

$5,000 for US to Europe/Asia is a VERY ROUGH ballpark which includes transport as well as customs fees and duties. Please contact Shippio for an exact quote.

Australia/New Zealand:
We recommend Bikes Abroad

$1,500 for US to Australia is a ROUGH ballpark, please contact Bikes Abroad for an exact quote including shipping and customs.

Sorry, CycleVIN report not available.

Iconic Motorbike Auctions