The ultimate engine? This Stage 3 engine comes complete with a race head (23mm intake & 20mm exhaust valves,) intake and 24mm carb setup. Also a stronger shift shaft and folding tip shift lever. A fully ported race head that flows 260cfm over the original cfm (an 80% increase); stage 3 also comes with a set of hardened shift forks and shift drum for long lasting race abuse.

Spec to big to list, email for details

These things are selling like hot cakes....This AHP race cam is good for up to 1.5-2hp alone on the dyno (depending on your tune!) The lift on this cam is 257, stock is 224. This cam also has a much better duration at 236! Utilizes stock dual HD springs.

Piston kit comes complete with gaskets, rings, circlips, wrist pin, and piston. Compression ratio on this kit is 12.5:1 over the stock ratio of 9:1

Were happy to announce that the AHPminis high compression 52.4mm piston kit that fits these bikes/engines:


Xsport Mk1 107cc (52.4 x 49.5mm stroke)
Xsport CR2 124cc (52.4 x 57mm stroke)
Xsport CR3 124cc (52.4 x 57mm stroke)
Thumpstar
Pitster Pro 124cc (52.4 x 57mm stroke)

You may find, after impoving the handling of your CRF50 with upgraded suspension parts that it's now lacking in the power department.
If that's the case then the Red Baron 88cc Big Bore Kit is for you.

Includes, big bore cylinder, piston, race cam, enlarged carb, air filter, performance spark plug and all gaskets and fitting instructions.

If you need more power then this 110cc super pro stroker upgrade could be the one, including big valve head, stroker crank, 24mm carb and everthing you need for an easy installation.

Many power upgrade options available so email for specs available.

Designed for use with standard engines and BBR 82cc engine upgrade kit (not displayed, but available on request)

Designed for use with the Red Baron 88cc upgrade or any modified motor to increase fuel supply.

Stock accelerator pump covers permit only a 60% - 70% fuel charge in the pump chamber. Turn the throttle and air in the chamber is compressed and fuel is delayed.
The result: Hesitation or Bog.

The Boyesen QuickShot cover completely fills the pump chamber with fuel, and provides instant fuel delivery, eliminating the hesitation and bog.

*Fits all 4-Stroke Keihin FCR carburetors
*Instant response to throttle movements
*Improved low end performance
*Reduced hot engine stalling
*No modification required - simple bolt-on

Developed using years of motocross experience, 'Uni Filters' are renowned for producing some of the best aftermarket filters available.

Feel the difference and hear the difference, as the air is now sucked into the engine.

Simple upgrade that changes the 95 main jet to a 110 and the 15 pilot jet to a 17.5.

Many Xsport 110 owners are now doing this simple mod to transform their engines characteristics. I have also heard that these are the jets that the UK Xsport importer uses so they must be better!

Upgraded alloy 18/22mm carb spacers also available.

BBR developed exhaust system, comes complete with spark arrester installed to keep those environmentalists happy! Ceramic coated and tapered header for maximum power gains throughout the RPM range. Will also accept the stock endcap for enhanced sound level output!

An ideal combination with the BBR Rev Box

FMF have taken their successful PowerCore 4 and scaled it down to give the minbikes what they need...more power!

Their system offers, serious power gains with less weight. The PowerCore4 muffler features an extruded aluminum canister mated to a stainless steel cone end cap saving you pounds over the stock system. Most applications come with a tuned, nickel plated header for optimum performance

The guys at Pro-Circuit are pretty well known in the MX world, with riders such as Jeremy McGrath, Ricky Carmichael and Travis Pastrana among their customers, so if it's good enough for them then you know it's good enough for you!

Clasic styling and Pro-Circuit construction provides increased horsepower and a stronger responce under acceleration.

This is our new "Red Box" MX Performance CDI, specifically designed for MX use. Improves throttle response across the powerband while at the same time eliminating the rev limiter found in the stock Honda CDI. Best suited for 88cc+ Motors, but will work with the 50cc motors.
Easy to install.

Higher intensity spark with fater recovery and responce. Supplies 15% more energy, longer plug life as well as a hotter spark.

This coil will add a nice pep across the rpm range.

Not so much of a problem if you ride a trusty CRF50, but for you guys riding an Xsport/FYM your sure to have noticed your chain stretched or even snapped within quite a short space of time.

I've got access to some of the best aftermarket chains that are used by many motocross teams worldwide so you know you are buying a quality product, available in 420 and 428.

Need your bike to accelerate faster, or want to give it more top end?. By adjusting the sprocket ratio's you can fine tune how you want your minbike to perform.

Available by Rentha, Talon & Red Baron

With all these performance mods available, you may be finding that your going through clutch springs faster than before. These BBR upgraded clucth springs are designed last longer with engine performance upgrades and at £20 your can't go wrong!

Standard CRF50's throttle's are renowned for not being up to much, this plastic upgrade fits all 7/8 inch bars and is an ideal first step to better throttle response.

To further improve on the above throttle upgrade Red Baron designed the big throw throttle.

Produced in black and billet aluminium the big throw means you can open your throttle wide open with only 1/4 turn!

This AHP billet throttle assembly is a must for any aftermarket handlebar on your mini. it has a full throw like the big bikes and is anodized in black and is super-strong.!

The picture does not do this product justice and is a great budget billet throttle.

With all that power on tap from your 88cc conversion and throttle bodies, your going to need confidence in your gear selection.

The Red Baron upgraded gear shifters have a unique folding tip to prevent snagging on ruts or your friends whilst racing. These shifters will take repeated bashing and bends without snapping or breaking like the standard versions.

The new ASV series levers produced from forged 6061 Aluinium, is unbreakable and it's "Shorty" clutch lever & perch offers the new “Slim” blade design which feels like a stock lever, but is 1" shorter.

For manual clutch and drum brake applications.

F3 comes with a 3-Year guarantee
C5 comes with a 5-Year guarantee!

Designed especially for the Marzocchi/Formula brake master cylinder that is part of the Marzocchi front suspension and brake system upgrade. This really is the ultimate in bling, but with the added benefit of giving the formula set-up far more 'feel' and control.

C5 comes with a 5-Year guarantee!

Get rid of those nasty stock brake levers and get hold of these nifty little two finger levers.

Includes perch, lever and adjuster.
NB. Replacement brake cable not included.

Crafted from 6061 aluminum, to suit the Honda CRF50 clutch cover. Features include a strong and lightweight 3 piece design, which includes two separate positions for foot pedal placement helping to accommodate all riders from kids to adults.

Design features anodized and laser engraved finish, with an over the top foot peg design that utilizes your existing frame mounting point.

The brake lever also offers the advantages of allowing users to now lower their foot pegs if desired to accommodate taller riders and to lower your bikes center of gravity.

Thought I would post something up to say thanks, got my IMS/Red Baron gear shifter today, only ordered Tuesday evening!

Well pleased with it, nice and chunky dont think i will be bending this in a hurry.. and at the price cant complain will post pics in a bit, after ive plastered my bike in the stickers i got with it

Hi George.

Minibikes rock! I love the things....so much fun!
And heres a pic of my ASV lever:

Hi George.
The Pro-Circuit T4 exhaust has arrived. Looks well bling, header pipe is now turning gold, extra bonus! Not to sure if i'm riding it harder (to make it sound louder), but the bike is quicker. Lifts in 2nd gear easier, and i'm arriving at comers a gear lower than I was, plus the back fires when stowing into a corner are fun. Yet again, its tooooo easy to spend money on your site,

George supplied the parts of which alot of places could not source let alone match his prise if they could. Thanks to george that I was able to make the transformation possible and some very helpfull information from his bottomless pit of minibike knowledge. Check out the Red Tyres!

Just to let you no I got a parcel today and have just finished putting all by parts on, (alpinestars graphics, elka, pro-circuit exhaust and uni filter)

Looks and sounds great all ready for Mallory on Sunday.
Thanks for the free filter and the great service, just need to save for some new forks next but you will be hearing from me.