Koski Bros. Bikes

Mountain Bikes
Koski Custom Bikes made in the USA.

Operating as usual

Photos from Koski Bros. Bikes's post 05/17/2021

A few of Chris Paretich’s friends on some of his bikes went up to the Bowl Saturday night to honor him.
It has already been a year since he had to roll on.
This is one of his bikes that went up and was piloted by CF a bike builder himself and one of CP’s closest friends.
CP was the mon that could bend Ti and did his secret methods for several builders of Ti bikes.
He built a few of these beautiful Ti cruisers but this one was his.
See you around the bend CP

Dick 04/28/2021

Dick

RIP Dick Mann one of the fastest guys EVER!
Condolences to Kay, the Lawwill’s and the Poole’s.

https://racerxonline.com/2021/04/27/dick-bugsy-mann-rip-1934-2021

Dick Mann was 86 years old. Godspeed.

Photos from Koski Bros. Bikes's post 04/11/2021

Derby Ray!
You want the goods? Hit up Derby Rims for a Derby deal!

Timeline photos 04/02/2021

Koski and CZ!

Mendocino Trail Stewards 03/21/2021

Mendocino Trail Stewards

Agh... a little help please... this harvest plan needs to be defeated.

Doesn’t seem right that they could close Jackson Forest to all user groups for up to five years for a million dollars in trade for all those trees.
Log Manly gulch, F’ that!
This is not right. Help!

https://www.mendocinotrailstewards.org/

Mendocino Trail Stewards News and entertainment for Jackson State MTBers, Equestrians, and Hikers interested in using and taking care of the trails on the Mendocino Coast

Paragon Machine Works Spliff Cycles Vintage Mountain Bike WTB Shimano | eBay 02/23/2021

Paragon Machine Works Spliff Cycles Vintage Mountain Bike WTB Shimano | eBay

Apparently not unobtainium !
O’ya a Koski fork!

https://www.ebay.com/itm/Paragon-Machine-Works-Spliff-Cycles-Vintage-Mountain-Bike-WTB-Shimano/174649092510?hash=item28a9e5a99e:g:c88AAOSwwlVgND4e

Paragon Machine Works Spliff Cycles Vintage Mountain Bike WTB Shimano | eBay Welding was done by MN. It served as a touring bike, commuter bike and train hopping bike among other duties. This is a rare bike from Paragon's distant past, and will be an asset to any collection.

Timeline photos 02/21/2021

Sweet lines back there!

Photos from Koski Bros. Bikes's post 02/07/2021

Before the name ...
Brakes cause friction anyway.
Single ring will never be a thing.

WTB Launches Proterra Wheelset Range 01/28/2021

WTB Launches Proterra Wheelset Range

WTB doing hubs and rims again! 👍🏿
https://m.vitalmtb.com/news/press-release/WTB-Launches-Proterra-Wheelset-Range,4256

WTB Launches Proterra Wheelset Range MILL VALLEY, CALIFORNIA – January 27, 2021 – WTB now offers complete wheels at an affordable price! Proterra mountain and gravel wheels are available individually or as a $649.90 wheelset that performs well above its pay grade. Every Proterra hub...

Timeline photos 01/03/2021

ES’s bike from Berkeley!
Her build list...
“I went a little crazy on the parts...Sram axs, wolf chainring, Cane ewings, CK bb, CK hubs, crank brothers stamp 11 pedals, Magura MT7 pro brakes, Oddity Razorbar, Paul box stem, Works headset 1.0 degree angle, Derby 35i am, Wtb vgilante 2.5 in front and Wtb trail boss 2.4 in back, fox 34 fork, brooks b17 saddle, paul seat post, paul spc. I think that’s it 😆”
She knows bikes!

KOSKI BROS. – Mountain Bike Frames and Forks! 12/23/2020

KOSKI BROS. – Mountain Bike Frames and Forks!

O ‘ ya !
https://koskibros.com/

KOSKI BROS. – Mountain Bike Frames and Forks! Home NEW KOSKI BROS. BRO BOMBER FRAMESETS ARE NOW AVAILABLE!!! FOR ALL THE INFO YOU NEED CHECK OUT THE DETAILS IN OUR PRODUCTS SECTION, AND IF YOUR INTERESTED IN GETTING ONE FOR YOUR NEXT BUILD REACH OUT TO US DIRECTLY. Email: [email protected] PHONE 415-847-8161

Timeline photos 12/12/2020

Yo, stop by Sierra Ski & Cycle and check out Gary’s place next time you are up in South Lake Tahoe. He has been doing it since before there were “Mountain bikes” and had an original Pro-Cruiser back in the day... He still has it!
Shown here with his Gearbox Koski, his creation, by Ventana and SyCip with his henchman holding a new Koski. Stop by his old school shop and tell him Donny sent you for the full treatment!

https://sierraskiandcycleworks.com/

Photos from Koski Bros. Bikes's post 12/05/2020

If you are considering running a suspension fork. An a2c of about 530mm works really well with these.
Or rigid.
W/ “Like a tiger!” CP

Photos from Koski Bros. Bikes's post 11/26/2020

Dave and Donny with Mert Lawwill and Joe Lawwill hanging out in Tiburon, Ca.!

Timeline photos 11/01/2020

TC is holding the first Pro-Cruiser frame built and DK holding his frame he handed off to Mert Lawwill to build the first mass production off-road bikes with Terry Knight.
This image was taken a while ago while hanging out with all the brothers that ride and put on the greatest event of all times “the RedBull Rampage” held in Virgin, Utah.
Hoping to be there next year! Thanks TB!

Timeline photos 10/24/2020

TGYF!
Tam !!!!
Koski
Shimano
Collie
Fox
Enve
Sram
HT
Splitrock Tap & Wheel

Photos from Koski Bros. Bikes's post 09/30/2020

Have to build some new 1” steer forks... they will be available for around $350.00 shipped. Made here in the US.
Anybody else want one?

Photos from Koski Bros. Bikes's post 08/22/2020

Ultimate Koski Bike Kampingk is a thing.
JD straps his hydration packs in the highlighted area high on the mountain!

Timeline photos 08/15/2020

Yo Gary! Looks fantastic !
Ventana / Sycip !

Gary Bell is one of the pioneers of Tahoe mountain biking. He helped found the original TAMBA in 1988, then steered the organization through the 1990s. Last night Gary was out riding his brand-new custom built mountain bike – with an 18 speed internal gearbox at the bottom bracket, and the frame is designed around Gary’s original Koski Lawwill Pro Cruiser mountain bike from 1979. Absolutely timeless, and no, this bike doesn’t have a motor!

Timeline photos 08/15/2020

Break out the cruz and find water quick!

https://koskibros.com/

Timeline photos 08/08/2020

Bomber is/was a name used for a bike that one used to rip down the hill on.
A Klunker or Clunker, was a name used for a bike that was put together by sourcing parts that were obtained at the ready and spending to build it kept low, hopefully.
A Hybrid is what Alan Bonds called his bikes he sold before there were “Mountain bikes”.
“All Terrain Bikes” is the name The Cove Bike Shop used
around the time of publishing the first off-road bicycle catalog.

We still like the name Bomber! It is possible that some people may not like it these days. Sorry!

Bikes not Bombs!


https://en.m.wikipedia.org/wiki/Fairfax,_California_B-17_Crash

Photos from Koski Bros. Bikes's post 07/11/2020

Zo’z TM high on the Mtn.
With an early CBR.
The TM twins of PTB and MPH @ BizzJohnson
w/ Thor’z Helmut for an extra boost!

Photos from Koski Bros. Bikes's post 06/26/2020

Bonds build.
1st DH drop was, of course, Repack.
AB won the first Repack which was a segment of a race he and his Bros. called, The Enduro.
It started, if I’m remembering the lore correctly, up on Pine Mountain Rd. and blasted down Carson Falls gully to Alpine lake. Went up Old Vee back to PMR. Took a left somewhere near the start of Repack and mazed through the pygmy cypress and manzanita to the West back up to the saddle before Pine Mountain.
Then head on back to the top of Repack. Fred Wolf, I believe, was at the top of Repack with a clock and another Bro was at the bottom sync’d.
Who is the real Daddy of Dirt?!
What’s different about this build?

Photos from Koski Bros. Bikes's post 06/21/2020

HFD Bros. !

Timeline photos 06/04/2020

Pulling out the TM for a Chief to ride on a special full moon deRby!

Photos from Koski Bros. Bikes's post 06/02/2020

Close but not the same.
Alan Bonds Bikes!

How to Replace Your Frame Bearings 05/23/2020

How to Replace Your Frame Bearings

Haha! The Transition guys are hilarious!
Splitrock Tap and Wheel in Fairfax now carries them!
Go get one!

How to Replace Your Frame Bearings How to replace your frame pivot bearings with Transition Bikes. As always, support your local bike shop and only attempt a frame bearing replacement if you a...

Timeline photos 05/13/2020

A little bit of the wet stuff means...

Timeline photos 05/08/2020

Here is one of those Alan Bonds Hybrids that has just been built
Two more will be completed and shipped off soon.
This one has 27.5 wheels and an ultra-rare Koski fork.

eBay Finds: Indurain's 1994 Pinarello Banesto team-edition bike 04/26/2020

eBay Finds: Indurain's 1994 Pinarello Banesto team-edition bike

https://www.google.com/amp/s/www.cyclingnews.com/amp/news/ebay-finds-indurains-1994-pinarello-banesto-team-edition-bike/

eBay Finds: Indurain's 1994 Pinarello Banesto team-edition bike Big Mig's 1994 Tour de France Pinarello Banesto, celebrates the peak of steel-racing frames

04/02/2020

When they weren’t building Pro-Cruisers!

Lawwill/Knight XR

03/27/2020

Eric Westerhoff’s CBR, originally purchased by him at the Cove Bike Shop!
Thanks Terry and Tippie!
DK loved the Fro brothers!

Timeline photos 03/26/2020

Duratrac alert!
You’ll have to by the rest of the bike though.
It’s a Ibis SS with a Koski fork!

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F283826072286

Photos from Koski Bros. Bikes's post 03/21/2020

Alan Bonds is at it again. These Hybrids (that is what Alan called his bikes) are going to be for sale and built complete!
Let us know if you want one from the guy who did it first.
Cheers AB!

Photos from Koski Bros. Bikes's post 03/08/2020

Get ready to Repack. Church today. The track got watered! JC will be running his dance’ in shoes, or his DFL dress... but we can’t show that image.

Videos (show all)

Products

Koski Retro Bomber frame w/rigid fork and Trail Bomber frame for 140mm fork.

Telephone

Address


17 Sky Rd
Mill Valley, CA
94941

Other Mill Valley shops (show all)
Ram Print and Communications Ram Print and Communications
800 Redwood Hwy Frontage Rd, Ste 804
Mill Valley, 94941

Ram Print and Communications has been Marin's largest and best printer for over 48 years. We really

Diamonds in the Rough Consignment Boutique Diamonds in the Rough Consignment Boutique
448 Miller Ave
Mill Valley, 94941

Prada Gucci Chanel Blahnik Louboutin Juicy Couture True Religion Seven for all Mankind Citizens Hud

Anne Z's Recycled Treasures on eBay Anne Z's Recycled Treasures on eBay
Mill Valley, CA

Anne Z's Recycled Treasures -Tennis, memorabilia, Streisand, books, clothing, dinnerware, ice skating dresses, household items, records, shoes, toys, magazines, Mac items, electronics and so much more!

Edward's Salon Edward's Salon
655 Redwood Hwy Frontage Rd, Ste 140
Mill Valley, 94941

High on style. Low on attitude. Voted best salon in Marin.

Tam Bikes Tam Bikes
357 Miller Ave
Mill Valley, 94941

MILI MILI
77 Throckmorton Ave
Mill Valley, 94941

Welcome to the world of Mili on Facebook. International Contemporary Women's Wear & Accessories

Studio Velo Studio Velo
31 Miller Ave
Mill Valley, 94941

Bay Area's Premier Cycling Shop Finest Gravel, Road & Mountain bicycles Top Notch Service Ace Fit Studio Inspiring Trips to 🇯🇵 🇪🇺🇺🇸 @studio_velo

Goodman Building Supply Goodman Building Supply
775 Redwood Hwy
Mill Valley, 94941

Goodman Building Supply is a locally-owned, certified green hardware and housewares store in Marin County. We are your one-stop place for hardware, home decor, plumbing, electrical, lumber, tools, grills, garden and more.

Mill Valley Music Mill Valley Music
320 Miller Ave
Mill Valley, 94941

Mill Valley Music is a vinyl record store surviving in the modern age of digital downloading, with a dedication to "Keeping Music in Mill Valley". The store is owned and operated by Gary Scheuenstuhl with the help of his son Michael Scheuenstuhl.

Alexanders Artisan Rugs: Kelim Liquidation Warehouse Alexanders Artisan Rugs: Kelim Liquidation Warehouse
1 El Paseo Lane
Mill Valley, 94941

Alexanders Rug + Kelim Warehouse is the liquidation page for Alexander's Artisan Rugs. Dealers, designers and collectors are welcome too!

Aviator Nation Mill Valley Aviator Nation Mill Valley
129 Miller Ave Suite 700
Mill Valley, 94941

1970's Inspired Luxury Loungewear Handmade in California

Featherbed & Bath Featherbed & Bath
9 Throckmorton Ave
Mill Valley, 94941

38 years in Marin County! A luxury linen boutique specializing in European down bedding and custom bed ensembles.