BMW Motorrad Spezial

Hammarhead Jack Pine

Triumph T100 Scrambler custom motorcycle
There’s something about this slightly gawky 2008 Triumph T100 Scrambler custom that appeals to me. Can’t quite put my finger on it, but I like it. It’s from Hammarhead Industries, a now-defunct US company that had a mission to create “simple yet modern motorcycles”.

The US$16,500 Jack Pine is a Triumph Scrambler that’s been given a thorough reworking—which includes the removal of the oil cooler, a rear frame loop shortened by four inches, and a reworked seat unit.

Triumph T100 Scrambler custom motorcycle
It’s running Keihin CR carbs and a K&N filter, which meant fabricating compact intake manifolds similar to the old T120. The exhaust is by Specialty Spares; according to James Hammarhead, “It’s still loud but the electric Volta 102 brings the Hammarhead fleet average down to a low level!”

Triumph T100 Scrambler custom motorcycle
The forks have been fitted with Race Tech Gold Valve Emulators, and the rear shocks are clean and narrow steel tracker models from Works Performance. It’s a cool, understated look enhanced by Continental Twinduro tires and matte black paint. The 865 cc engine internals are stock, but the removal of the oil cooler threw me at first. It’s apparently had no injurious effect: “with richer jetting and new pipes, oil temperatures have not been a problem,” says Hammarhead. “I constructed a custom Spurgin oil cooler for the bike, but while I was waiting for the lines to arrive, my brother encouraged me to throw in a few plugs and light the bike. We ran it with an oil temp gauge and slowly became more confident. For nervous folks (like me) an oil cooler is a no-cost option.”

Photos by Ryan Miller.

Triumph T100 Scrambler custom motorcycle

Jack Pine
Price: $16,500
Concept: James Hammarhead
Assembly: Hammarhead Industries
Base: 2005-08 Triumph Scrambler
Power: 865cc Twin
Build Time: 90 days

Carburetion: Keihin CR
Air filter: Modified K&N
Exhaust: Specialty Spares with MAMotorworks baffle

Front: Race Tech Gold Valve Cartridge Emulators
Rear: Works Performance Steel Trackers
Tires: Continental Twinduro

Painter: James Hammarhead
Color: 50/50 mix Rust-Oleum gloss & flat black

Bars: no name vintage MX
Brake master cylinder: Brembo
Mirror: Joker Machine
Fenders: no name alloy
Pegs: Joker Machine
Taillight: Street Magic
Risers: TAG Metals
Seat: Hammarhead Industries
Sprocket cover: Joker Machine
Speedo: Dakota Digital with cable drive
Switch gear: Emgo & Honda Ruckus
Turn signals: Truck-Lite

  • Turgut

    Two thumbs up!
    Almost perfect except for the last connection point of the exhaust pipes..

    I also think the rear brake calipers are prone to damage when positioned on the lower side of the circle.

    But hey, it’s just an awesome bike.
    Very well done.

  • Just by the pictures and the license plate, these guys are located in Philadelphia. Awesome bikes…

  • Now THAT’S a proper Scrambler! Triumph should put a little more function over fashion into the factory version.

  • Fantastic!

  • The Phantom

    From side on, that is the very bike they base all simple kid-style motorcycle drawings on. I’m sure of it , I’ve drawn a few of them myself : )

    Lovely proportions and form, just enough silver in just the right places to complement the black.

    Maybe that ‘something’ that Chris talks of is in the vintage MX bars, They might be the key to turning this bike into something special.

    Great work!

  • Kozzy

    Me like!

  • Scramblicious!

  • Rex Havoc

    now that is cool!

  • Love this bike. I’ve wanted to pick up a scrambler and do a flat tracker conversion since I first saw one on the street.

  • love it!!! man that looks fun…

  • Peter

    Fab – almost perfect in fact, shame about the pointless exclusion of an oil cooler, so 9 1/2 out of 10 from me….

  • David Enfield

    Love it . The seat is exactly right , ally guards , little head light & switch , fork gaiters , the knobblies ! A new vintage .

  • Dawg

    I like the alloy fenders and tidy tail light. A lovely looking bike, simple and timeless. I’ll bet the neighbours love it too!

    It would be difficult for Triumph to use the modifications here on production bikes because of all the regulations they have to pass, I’ll bet they are pleased about the passion people have for their bikes though.

  • I think it’s one of the best looking bikes ever. It gets the classic look of a Métisse, albeit road legal (I hope), just right. I absolutely love it.
    Time to find out if European legislation will let it ride the streets.

    As for the removal of the oil cooler – if it’s not essential, then good riddance.

  • WRXr

    Nicely done and nicely photo’d, however to me the straight pipe seems out of place. As is often the case, it seems unfinished.Someday custom builders will realize that the silencer is an opportunity to get creative and innovative. Think back on the fishtail silencers of yore.

  • freddyb

    John Penton, a legendary off-road motorcyclist and industry pioneer, was featured in AMA’s April magazine. It gave a good summary of the Jack Pine event, a grueling 500-mile enduro run near Lansing, Michigan which featured mainly Harleys and Indians until the late 40’s and 50’s when smaller, lighter, lower displacement bikes from overseas revealed themselves to be dominant in the event, especially in the often sandy conditions of the race where the heavier bikes would sink and spin their wheels uselessly.

    This custom Triumph seems to be a worth homage to the winning bikes of that era. I love it. Bravo

  • Derek Larsen

    that bike is hot and light. it looks like a 125cc frame with a monster motor shoehorned in.

  • Steve

    Nice lines. I agree, it needs a scrambler type exhaust, and a better tailight and licence plate mounting system. but otherwise dang good!!

  • Vlad

    Nice bike, especially those that fancy the smell of their own burning flesh (hint: unshielded exhaust pipes).

  • shannon

    I agree, looks great apart from that 3rd degree burn you likely to pick up in the first 30 seconds of riding.

  • PB

    meh, you usually wear mx boots, not sandals.
    l ride a triumph and agree this scrambler looks simple and classic!
    and l want those CR and air filters on my thruxton…

  • reddykilo

    Love how the front engine compartment is cleaned up without that ugly oil cooler; have myself considered different options for removing it. Only thing I am unsure of though is the fact that the oil lines flowed the upper cam area, now what’s going on without the oil cooler lines going in there? Is the cam area still being well oiled? Anyone know?
    Very nice bike.

  • Kevin

    I like this bike a lot. It has a really old school look to it in my opinion. Reminds me of an older Harley dirt bike or something like that. I really dig the paint. I definitely think this demonstrates that less is definitely more…

  • deniro

    Have heard that while the actual cooler can be removed the oil still needs to be allowed to pump to or through an outside circuit. Otherwise the oil pumps are negatively affected.
    Can the builder comment??

  • Thanks to all for the insightful comments. The oil cooler was the crux of this build. Initially I was committed to a minimal cooler using a Spurgin heat exchanger but could not achieve the lean effect I wanted. My brother’s encouragement (at times dangerous but always fun) pushed me to do the final build without it. Before I pulled the trigger, I talked with Bill Himmelsbach ( about his scrambler builds. Bill knows these bikes inside and out and assured me that the oil cooler loop is independent from the lubrication circuit and that capping the feed does not stress the pump. He runs a big bore kit and mild cams without a cooler. After 3000 miles (including a track day and a flogging by the moto journalist Alan Cathcart), Bill disassembled the engine and saw no unusual wear. Furthermore, Bill said there was no color change around the piston wrist pin, an area that turns a telltale gold tint with overheating. That said, I offer the Spurgin cooler set-up as a no cost option. I do not run one on the development mule, but plan to install it when the bike is prepared for my Delhi to Leh-Ladakh ride next spring. Feel free to email directly with additional questions at [email protected] .

  • John

    This is a wonderfully composed piece of machinery!

  • bimmer

    Actually, it has been argued that capping the oil lines will make the forward pump work harder thereby drawing off HP. Would certainly like to know if this is accurate.

  • Speed

    I like the whole set up,pipes included,except the seat. my preference would be a Bates style solo seat,since I don’t take passengers off road with me. Aside from that,I can’t find anything I’d do differently. BTW-the pipes tuck in tight enough that they wouldn’t cause a burn unless you fall and get pinned down under one,and they sound great without baffles.
    I used to ride a BSA set up a lot like this,only not NEARLY as nice. According to my title it was street legal,so I got it plated,but it never would have passed an inspection.

  • Carter

    I was at Mid-Ohio today for Vintage Motorcycle Days and got a chance to ride this bike (actually the second Jack Pine). I just can’t say enough about how cool this is and what a great ride it is. (I also posted on Hell for Leather about it.)

    I love design that is driven by function and the user’s experience, rather than splash or fashion. This is really everything the Scrambler could be. Some of the changes are subtle, but it all comes together beautifully. In addition to the structural modifications, the tuning really brings the engine to life. I would love to have him do this treatment to my Bonneville. He has a great design attitude and is a very personable guy.

    Sorry if I sound like a salesman, but I would like to see more of this and less krome kruiser krap in the world.

  • Like Carter, I too had the opportunity to to take Jack Pine #2 out for a ride this weekend. Man, what a great bike! “Taut” was the first thing that came to mind when I jumped on, and I was too busy grinning from ear to ear after that to think much more. James and his team really nailed it on this one. Everything you need, and nothing that you don’t pretty much sums it up.

    Also, #2 has a great looking Zard 2 into 1 exhaust system on it for those of you worried about noise and burns. It may take away from the overall look to some, but I’m sure it adds to the overall riding enjoyment. :)

  • hammarhead

    In response to Bimmer’s question above: Jack Pine #2 was prepared for Mid-Ohio with our custom oil cooler. We tested on the track with and without and neither the stop watch nor the seat of the pants revealed any change in performance. If we get a chance, I will repeat the experiment on the dyno. The question is somewhat moot in my mind because the HHI cooler has worked out well aesthetically. Thanks for the interest and support. [email protected]

  • paul burdett
    We had an intense conversation @ mid ohio last weekend .Watch this. Paul

  • hammarhead

    Thanks Paul. Can you shoot me an email so I have your contact info? [email protected]

  • tom

    Beautiful, thats my next bike, with a sashimi twist, love it!!!

  • thedide

    simply excellent, but the exhausts. how loud are they? a ZARD lower unit would still fit this bike…

  • David Enfield

    Well , the thing is ……………… the numbnuts unit motor . Dump that for pre unit and ………there you go ..

  • Its absolutely amazing I really like that style of bike. It looks like noise and possibly burning those who don’t know how to ride would be some of the only down side to some. I think the single exhaust looks great though and wouldn’t cause problems for me. Hope to see one soon.