MXA Tested KX269F
Posted by Jay on January 26th, 2012
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Posted by Jay on January 26th, 2012
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Posted by Jay on January 26th, 2012
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Posted by Jay on December 23rd, 2011
Videos that show all about this great engine stand.
Tags: Metaltek Racing
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Posted by Jay on November 28th, 2011
I was able to go back and visit the main company I work with C&L (Hot Rods,
Tags: C&L Companies
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Posted by Jay on November 15th, 2011
Tags: Alpinestar Tech 8's
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Posted by Jay on September 15th, 2011
Tags: Cylinder Works 727 Raptor
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Posted by Jay on September 14th, 2011
Tags: Thumpity Dirt Bike Magazine
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Posted by Jay on August 31st, 2011
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Posted by Jay on August 22nd, 2011
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Posted by Jay on August 1st, 2011
Tags: Motocross Action YZF 310
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Posted by Jay on July 22nd, 2011
Tags: Motosport Mail Order Dream Ride
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Posted by Jay on July 22nd, 2011
Tags: Honda CR125 - Craigslist Killer Project
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Posted by Jay on July 20th, 2011
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Posted by Jay on July 12th, 2011
Check out this cool little race quad we helped with for a young lady from Riverside. Look for the full test in the next ATV 4 Wheel Action magazine.
Tags: ATV 4 Wheel Action magazine
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Posted by Jay on July 12th, 2011


Tags: KTM Hot Rods
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Posted by Jay on July 12th, 2011
For those suspension experts and just all around good mechanics Pivot Works now has complete shock rebuild kits for the older CR/CRF’s (with Showa shocks). One complete kit fits an incredible amount of Honda’s; CR 250R (2002-2007), CRF 250R (2004-2009), CRF 450R (2003-2008) and the CRF 450X (2005-2009). Retail price is only $89.95 so a great value with the trusted Pivot Works name and reputation!
Tags: Pivot Works Shock Rebuild Kits
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Posted by Jay on July 12th, 2011
Hot Cams has long been the standard for drop-in power. Now there are more options than ever before. Hot Cams gives you more options and more power than any other cams on the market. Stage 1 and Stage 2 for simple drop-in power and then Seven different “builder series” cams that are targeted for the engine builder or garage mechanic who insist on his own “custom grind”. To see the exact lift/duration specs of these cams visit http://www.hotcamsinc.com/News/crf250rSpecs.png . With nine total choices of cams you can pick the cam that is best for your fuel injected CRF 250R with Hot Cams. The complete cams are $269.95-$295.95, some of the builder series do require the use of stiffer valve springs which are available from Hot Cams as well. Hot Cams 2010-2012 CRF250R Cams$269.95-$295.95.
Tags: Hot Cams
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Posted by Jay on July 12th, 2011

Tags: Uni Filter
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Posted by Jay on July 12th, 2011
There is no suspension company that is as diverse as Race Tech who works on ATV’s, Street bikes, vintage and of course dirt bikes. When it comes to something odd-ball they will fix it up. Here is a TTR Shock that needed help with a shaft they got fixed up.
Tags: Race Tech ATV Shock
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Posted by Jay on July 12th, 2011

Tags: MotoSeat. Seat Covers
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Posted by Jay on May 5th, 2011
Tags: More Power Raptor 250, Raptor 250 Hi Performance Piston, Raptor 250 Piston, Raptor 250 Power Package
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Posted by Jay on May 5th, 2011
Tags: CRF250R Big Bore, CRF250R Oversized Piston, Millennium Technologies CRF 264 Big Bore
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Posted by Jay on May 5th, 2011
Tags: CV4 Honda CRF450R
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Posted by Jay on April 14th, 2011
Check out the video about the Project
Tags: Dirt Bike magazine
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Posted by Jay on April 4th, 2011
Tags: Cylinder Works CRF250 Big Bore Kit
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Posted by Jay on March 2nd, 2011
Today I got to do a quick 49 minute moto on my favorite practice track in the entire world, Cahuilla Creek Motocross! Track has been great with the new owners and Ron has been doing a great job on the track prep. After a rain he has it fixed back up about as fast as anyone could. I used to love to ride in the hills in the winter but now Cahuilla is my place and can avoid being hassled by the man and have a great time. The vet/quad track is also fully prepped and a fun layout for those looking for a few less ruts and fast guys. Cahuilla’s main track is good for letting a Vet like me ride on a tough challenging track without having to worry about a ton of double or triples but still challenging enough for fast pros. Fun place for beginner to pro! Now they just added Friday into the weekly rotation for practice as well. Posted in Tracks | No Comments »
Posted by Jay on February 18th, 2011
Tags: CRF300 Video Built by Jay Clark for Thumper Racing
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Posted by Jay on February 6th, 2011
http://www2008.motorcycle-usa.com/374/9142/Motorcycle-Article/Thumper-Racing-Hot-Cams-CRF300R-Project.aspx
Tags: CRF300R, Hot Cams, Thumper Racing
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Posted by Jay on November 8th, 2010

The new CRF250R’s are fuel injected and a complete new engine. Travis at Thumper got one to 280cc with a big bore and a stroker version out to 300. We did the 264cc version here. Tested one day at racetown and one at Piru and had about eight different test riders all love each of the bikes. Of course 300 was the most favorite.
Tags: CP Pistons, Dirt Bike, Dunlop, Hot Cams
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Posted by Jay on November 8th, 2010

Parts Unlimited magazine got to test the best mods on a current CRF450R– Hot Cam and high comp piston. Josh Brown for testing riding and Kenny Jones shooting the pics. Came out great!
Tags: FMF, Honda, Hot Cams, Jay Clark, Motocross, Parts Unlimited, Pivot Works
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Posted by Jay on November 8th, 2010

Tom Morgan at Hot Cams came up with great cams and mapping to put this mod on top of MXA’s mini-test a few months back!
Tags: Dunlop, FMF, Hot Cams, MXA, Pivot Works, Tom Morgan
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Posted by Jay on November 8th, 2010

Last minute Hot Cams got Kiniry to fly out from New York state and give it a shot and see the Racer X project bike through.
Tags: CRF450, Dunlop tires, FMF, Honda, Kiniry, MX Nationals
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Posted by Jay on November 8th, 2010

He came up short the Sunday before the National on a section they ended up taking out for the race. Bummer deal—
Tags: CRF450R, FMF, Hot Cams, Pala
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Posted by Jay on November 8th, 2010

We tried for the last national but go hurt so had to go Johnny Jeldera.
Tags: Dunlop, FMF, FMX, Hot Cams
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Posted by Jay on November 8th, 2010

These come in the already proven wheel bearing kits and have an o-ring on the inside diameter of the spacer so that no water gets in to the axle/bearings.
Tags: front wheel, Motocross, off-road, Pivot Works, rear wheel
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Posted by Jay on November 8th, 2010

A simple drop-in kit that really works!!! Combined with a Hot Cam and FMF pipe.
Tags: ATV, Big bore, Cylinder Works, Dirt Wheels, FMF, Honda, Hot Cams, TRX
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Posted by Jay on November 7th, 2010

4 Wheel Action Project
Great mod by Travis at Thumper!!!!
Tags: 4 Wheel Action, Big bore, FMF, Hot Cams, Thumper
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Posted by Jay on November 7th, 2010

CV4
Last year we went for the 470 big bore but this year we kept it stock bore and hit a homer with this full CV4 mod.
Tags: CRF450R, CV4, Dunlop, FMF, head porting, Honda, Hot Cams
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Posted by Jay on November 7th, 2010

CP made the Custom pistons, Race Tech took care of the suspension and Bennetts Performance put it all together. FMF made custom pipes with self tuning Dynojet power Commander. Will be in Cycle World shortly.
Tags: CP Pistons, FMF, Jay Clark
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Posted by Jay on November 7th, 2010

CRF450R
He is hard on bikes!
Tags: CRF450, FMF, Fox, Honda, Hot Cams
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Posted by Jay on October 5th, 2010

On the cover of the October issue!!
Tags: 4x4, Cometic Gasket, FMF, Hot Cams, Thumper
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Posted by Jay on September 26th, 2010

Here is a picture of the Cylinder Works 269cc kit that works on all 2001-2011 YZ/WR 250’s. This is the best mod for your money on a YZ/WR 250. Only $599.95 Cylinder, piston kit and gaskets!
Tags: Big bore, Cylinder Works
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Posted by Jay on September 26th, 2010

Fits all current YZF250’s and either the cylinder big bore kit alone at 269cc or stroker to go to 284cc — This one was for Moto USA
Tags: FMF, Hot Cams, Hot Rods, Jay Clark, Moto USA
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Posted by Jay on January 20th, 2010
Transworld Motocross just tested the latest beast I created. Fast Core Mods did the head Work, Millennium the big bore cylinder and CP the high compression piston.

Tags: CP Pistons, Fast Core Mods, FMF, Hot Cams, TWMX
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Posted by Jay on January 20th, 2010

Bigger is Better for even the little machines!
280cc big bore with a CP Piston, FMF Pipe, Millennium Cylinder plating and Thumper put it all together for Cycle World.
Tags: CP Pistons, FMF, Millennium, Thumper Racing
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Posted by Jay on January 20th, 2010
Brian at SRC worked with Thumper Racing to make the fastest thing we have ever riden. Josh in his Fox gear is a Quad pro now!

Tags: ATV, CP, FMF, Hot Cams, Jay Clark, KTM, Quad, Thumper Racing
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Posted by Jay on January 15th, 2010
Stock is 76.8mm and big bore is out to 79mm making it 264cc and the results are great! Big power gains for low cost in the new CRF250R with no fuel mapping changes.

Tags: CP Pistons, FMF, Fuel injection, Jay Clark
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Posted by Jay on January 2nd, 2010
The Honda 400 motor is proven but can just use a bit of a boost from a cam and piston. Hot Cams and CP took care of that with a FMF pipe.

Tags: CP Pistons, FMF, Jay Clark
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Posted by Jay on January 1st, 2010
Check out this cool Motorcycle USA tire change video we just did during shootouts.
http://www.motorcycle-usa.com/708/Motorcycle-Video/Dunlop-Tire-Changing-Guide.aspx
We had a great time making it and I hope you find it useful.
Tags: Dunlop, Geomax, Jay Clark, MX51, Tire Change
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Posted by Jay on January 1st, 2010
Adam Booth from Dirt Bike came out to C&L in Iowa to see the plant and ride the Tom Morgan modified 2010 YZ250 into a 284cc

Tags: Cylinder Works, FMF, Hot Cams, Jay Clark, Pivot Works, Vertex Pistons
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Posted by Jay on December 26th, 2009
150cc kit with a Hot Cam and FMF pipe rips and will soon be in Cycle News.

Tags: BBR, FMF, Jay Clark, Pivot Works
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Posted by Jay on December 20th, 2009
The same for nearly 20 years the Blaster can use some extra power and Dirt Wheels will have this quad in very soon.

Tags: FMF, Hot Rods, Jay Clark, Vertex
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Posted by Jay on December 20th, 2009
Custom CP Piston matched up to a Thumper Advanced Sleeve. Travis at Thumper got this running really good and way more power than stock.

Tags: CP Pistons, FMF, Jay Clark, Thumper Racing
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Posted by Jay on October 5th, 2009
Well, after twelve long weeks of re-habing my dislocated shoulder I am back on a bike (still probably too soon but I have to do it). Much slower of course but I am riding. I have only rode a few times and only at Cahuilla Creek Motocross. Why, because for some reason I feel the safest there, not too crowded and just so much fun. This track is like the tracks I make in the hills come Winter time. Russell Wayman shot video and Andy Fritts supplied the use of his Camera. Not too exciting but I think you can see how fun the track is (especially when off for twelve weeks). I hope to be REM soon and get back to battling with guys I used to smoke.
Session 1
Session 2
Check out their website at www.cahuillacreekmotocross.com
Tags: Cahuilla Creek Motocross, CRF 250R, FMF, Honda, Hot Cams, Jay Clark
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Posted by Jay on August 30th, 2009
Joe Kosch at 4-Wheel ATV Action just snapping some pics of ATV Pro-to-be Russell Wayman on the built 700XX. Look for this soon in 4 wheel.

Tags: 700XX, CP Pistons, FMF, Honda, Hot Cams, Pivot Works
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Posted by Jay on August 20th, 2009

CRF 250R and 450RHheads
Millennium Technologies has cylinder head repair that uses their simultaneous 5-axis computer numeric controlled cylinder head porting center (what is that? so very trick machine to re-cut your seats and install valve guides). The work is great and is as good or better than stock and can save you some money on and let you keep that modified head in use.
Tags: CRF, Damaged head, Guilds, Honda, MX, Seats, Springs, Valves
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Posted by Jay on July 13th, 2009
What is the most important mod you can do to your current 4-stroke? Make sure it is jetted perfectly. 250F’s are in need of this most and Ron Wood at TokyoMods does a awesome job of making sure your carburetor is perfect after his mods are done you will get rid of any bog you might have. So, if you still have a carbureted bike get with Tokyomods at www.tokyomods.com

Tags: CRF250R carb Ron Wood Tokyo mods Motocross
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Posted by Jay on July 5th, 2009
Fast Core Mods did the full head work and Hot Cams brand new stage 3 cam went into the 469cc Millennium cylinder. FMF Pipe and some serious polishing. One trick 09 Honda CRF450R (well 469cc) We will see this on a TWMX poster coming up soon.

Tags: FMF, Hot Cams, Millennium
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Posted by Jay on June 25th, 2009
Since 1968 Mammoth Mountain has been going strong and we have been a part of for the last 16 years. We enjoy the great racing and the outdoors of Mammoth. C&L: Hot Cams, Hot Rods, Pivot Works and Cylinder Works are big sponsors as usual. Last week was the Vets then the Mini’s and on Friday starts the really fast guys.

Tags: Mammoth Motocross, Motocross
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Posted by Jay on June 15th, 2009
Check out the upcoming August issue of Motocross Action Magazine to see a full test on the 09CRF450R made into a 469cc monster. Great help on this project-thanks to all and especially Tokyo Mods. Just saw the article and not as good as I would like as they felt we had too much bottom end. However, a great build.

Tags: 2009, CP Piston, CRF450R, Pivot Works, Tokyo Mods
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Posted by Jay on June 4th, 2009
Cahuilla Creek MX has long been one of my favorite tracks but it can also be just terrible if the track prep is not good. Well, Danny has got some help now and they are investing in good equipment and staff to ensure there are no “bad days” so far the last two weeks have been great and I don’t really want to spread the Wednesday secret but it is just great. Sandy natural terrain track that Novice to Pro can enjoy.

Good!
Tags: Motocross track Cahuilla Creek MX So Cal
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Posted by Jay on May 31st, 2009
40th fastest 250F pro rider at Hangtown! Well, almost. My helper and long time friend Josh Brown gave it a go in the 250 class at Hangtown after nearly a year off of racing and came in at 40th in the qualifying times. However, they only took 38 directly to the show and then a LCQ for the final two spots. Of course we missed that for a bunch of reasons. A great time and I want to thank all of my companies that helped and especially Keith at JLAW and TokyoMods. Oh also that tough looking mechanic.
Josh is going to head to Texas and try one more time along with his Friend Craig. Good luck!

Tags: CP, Hangtown 2009 Josh FMF, Hot Cams, Motocross, MX, Pivot Works
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Posted by Jay on May 24th, 2009
This weekend was the 250/450 Glen Helen National. The event was incredible and it is amazing to watch up close the top riders in the world ride the most gnarly track on earth. On TV you can’t comprehend what these guys do on the track Jody designed. We were all tired from doing banners and watching races all day. Here many of the crew rest up before the next round of motos. I would really like to thank Bud and wish him and his family the best as they put on a fine race only weeks after terrible family tragedy. Bud does not “have to” put on this race but we are all grateful that there is a So Cal National and that it is at Glen Helen. Lori as always it was great– Thanks and thanks to all of my crew-
It was also wonderful to be at home and Church on Sunday!

Resting
Tags: Glen Helen National motocross
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Posted by Jay on May 21st, 2009
The AMA Nationals Start this Saturday at Glen Helen and Tuesday they were in full swing getting ready, the National track is incredible! Big jumps and huge hills.

Tuesday of the National
Tags: Motocross Glen Helen
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Posted by Jay on May 18th, 2009
Even with a down economy Milestone MX in Riverside CA, is getting big numbers for their practices. They have very consistent prep and keep things watered nicely. The Main track is a bit gnarly for my taste right now however, the vet track is really good to burn some laps on. The location is great for a ton or riders in the heart of the IE. The horses along the trackside add to the experience Check it out-

Good Riding
Tags: Motocross with Jay Clark
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Posted by Jay on May 18th, 2009
FMF Polaris 450 project with Fox Shox — came out great. Cain was very impressed with the mucho power.

FMF Polaris 450 Dirt Wheels Test
Tags: CP Pistons, FMF, Polaris Outlaw
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Posted by Jay on May 1st, 2009
Great Honda 250F made even better! Thanks JC and MOTOUSA.COM

Hot Cams, CP Piston CRF256CC
Tags: CP Pistons, FMF, Millennium
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Posted by Jay on April 30th, 2009
Here is a pic of the Hot Cams, CP Piston powered LTZ250. You’re not too impressed well there are not many parts for these quads out there and now there is a good kit to power up your wife or daughters quad.

Suzuki LTZ 250 with Hot Cams and CP Piston
Tags: CP Piston, FMF, Hot Cams
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Posted by Jay on April 14th, 2009
Dirt Bike Ron Lawson, Tom Webb and Adam Booth all enjoyed my 4 250F 2mm over project at Racetown
Tags: Big bore, CP, Dunlop, Hot Cams
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Posted by Jay on February 17th, 2009

Nick Lytle project AX CRF250R
For this TWMX project we built up a CRF250R into a full blow Arenacross pro level race bike. I didn’t of course have a full blown pro level Arenacross racer so we did the best we could and kinda did a extreme home make over and let made the dreams of a kid from the Menifee hood come true. Nick Lytle was able to race the bike at the Fresno round and then again at the other two Western races. Hopefully the next two go a bit better and he can make it to the main. So, far too much rain has been a problem as he can’t get any A practice and he is finding the whoops are a big area to make up time. Tokyo Mod, MB1, CP Piston and Hot Cams were all huge in making this project happen (oh and his boss at his part time slave working job with Parapros).
Tags: Nick Lytle TWMX, Tokyo Mod
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Posted by Jay on February 16th, 2009

Nice Guy!
I went the funeral for Lusk today. Not too much to say (no one likes funerals do they). I listened to some really nice things said about him from his family and friends. Faisst and Deegan were of course very sad with the loss of their friend. I came in contact with Jeremy as I would mount up his tires while he would wait in my garage. He was always very funny and nice. It is a shame and can’t say anything about God taking him because he died doing what he loved doing and I am sure knew the danger. Not sure if this will have a big effect on those performing or not but regardless Jeremy was fun to watch and on the way up not down.
Till we meet again-
Tags: Jeremy Lusk
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Posted by Jay on February 16th, 2009

Jiri at Perris
Jiri got hurt pretty badly the day after Christmas on one of our secret hill tracks. He had a very close call and a very tough surgery. It is great to see him walking around and doing so well. He now has the splints off his hands and he went to A3 and SD SX races to check it out. Jiri did say that when/if he ever rides again that he will wear a neck brace. Good luck Jiri!
Tags: Jiri doing well
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Posted by Jay on February 16th, 2009

Varner FMF CP Pivot Works 09CRF450R project
Tags: Varner FMF CP Pivot Works 09CRF450R
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Posted by Jay on February 16th, 2009
In January we shot this project Yamaha 269cc with a Cylinder Works 3mm over bore cylinder with a CP piston and Hot Cams.

Tags: Cylinder Works Hot Cams Dunlop CP Piston
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Posted by Jay on December 13th, 2008
Here is a video that demonstrates how to change a tire on your motocross bike.
Tags: Dunlop, Jay Clark, Jay Clark Enterprises, Motocross, Tire Change
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Posted by Jay on December 13th, 2008
Well, after nearly 20 years of working in the industry I am finally official in having my own company. Here I will list some of the current and up to date projects I am working on. In the past few weeks I have just finished up a big CRF250R (4 bikes) test with Dirt Rider. On the 6th I just had our last test with MXA on the lightest CRF250R ever. Just got started on the 09 CRF450R and getting more 09’s soon to get started on more projects.

Tags: Jay Clark, Jay Clark Enterprises, Motocross, Motorcycles
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