Genuine Mikuni TM42-6 (HSR 42) Carburetor fitted with cable choke for use with larger tanks.

  Honda XR650R requires a different kit also available through Mikunioz on eBay.

 The Mikuni TM42-6 HSR flows 17CFM more than our TM40-6 and incorporates many upgraded features such as a roller-bearing slide. All this when compared to you stock carb means going even faster has never been so easy, say goodbye to hard starting, hesitations and flat spots.  These Mikuni carburetors are correctly sized and easily fitted to your Honda XR600 and XR650L stock air box when using the silver anodized air-box adapter. This adapter is fitted prior to delivery when purchasing complete kits. For this Mikuni carburetor to operate correctly the motorcycles air box must be opened up as much as possible to allow more air flow in. The kit also comes with throttle cables and a 1/4 turn quick action throttle which must be lubed before fitment. The carb comes with a couple of  Honda specific adjustments made and pre jetted for your engine. A specially made size 30 pump nozzle is fitted as the accelerator pump circuit will not work properly on Honda's or Kawasaki's without it.

 Climate, altitude and fuel density from different octane fuels all have varying effects on final fine tuning as does cam, exhaust and cylinder head porting etc. For this reason, we have included what we have found to be a range of jets to allow you to tune to most variables. International customers please advise of your local fuel octane rating so we can make jetting adjustment to suit if required.

  This TM42-6 for Honda applications comes with a Cable choke and mounting bracket for accessibility when using larger tanks. We have listed an alternate kit which is fitted with a small pull out Knob choke for use when running smaller tanks.

 Note that as pictured the return cable bell crank will foul on the 1989 and later XR600's requiring the separate purchase from Honda of an OEM XR650L rubber mounting flange 16210-MY6-670.

  This carb fits with most aftermarket large capacity tanks being the Acerbis 22 litre tank or Safari & with the IMS tank which is very close. You must remove the inlet flange carb locator blocks with a box cutter to enable the carb to fully push home into the boot. The factory 650R Honda larger capacity tanks do not allow the fitment of this carb without modification. A competent person can easily heat and depress the contact area around the throttle mechanism allowing for clearance on problem tanks. Polyethylene tanks start their life as lump of poly that when melted evenly spreads itself around a rotating mold, to later carefully heat with a heat gun any section of a tank and change the shape has no effect on the integrity of the poly unless pushed too far thinning it. We recommend having this professionally done for the reason some people may neglect to properly remove all the fuel from an existing tank or if not competent may make a mess of it. .

  You will instantly experience better throttle response, improved acceleration, increased horsepower and torque.  In a number of instances Dyno tests have shown improvements of up to and over 25% when fitted to OEM carburetored engines.

 To clarify some commonly asked questions about this carb in regards to a comparision with our TM40-6 40mm carb:

  Both of these are great carburetors and you will be more than happy with the improvement delivered by either. The 42mm is just a little more finished version, delivering way more power and better fuel economy, understanding where they came from really makes it all clear.

  In the late 80’s Mikuni American released the HS40 (TM40-6) as an amazing new carburetor for the Harley Davidson market, literally knocking all its competitors out of the park. We were at the San Jose Custom Chrome Show when it was released and become part of that buzz as a distributor. This slide type fuel metering device basically made the competitors butterfly type carbs seem like lawn sprinklers.

 With the huge increase in Harley Davidson sales this became a very lucrative market. Recognising the potential of this market and being aware of the efforts of competitors to try and grab back their share of it made Mikuni realise the necessity of replacing the 40 with a carburetor to be the be all and end all of all carburettors. The target was to deliver unrivalled peak performance combined with smoother throttle operation and lighter throttle pull by replacing the metal on metal slide action with a slide running on roller bearings. Also a larger fuel bowl capacity was provided but most of all, superior venturi design and fuel atomisation resulting in more precise mixture ratios to not only increased horsepower and torque but also to enable the fitment of a larger carb to smaller capacity engines without losing valuable bottom end power, where in fact instead gaining more. In 1994 the HSR42 was born and just like you will if you fit one to your bike, all we could say was WOW. Instant throttle response delivering 25% more horsepower and torque over the stock CV carb before even putting on a real high flow air-cleaner. As the badge says 20 years later” Still the best performance carburetor on the planet”.

 Unfortunately, the TM42 only had limited sales in the Japanese single market due to it only appealing to the custom fitter as there had never been a cable set or air-box adaptor available off the shelf. With the slowing of the Harley market due to fuel injection on new bikes, here in Australia, Mikunioz realised the opportunity to offer Mikuni's best Carburetor to the big Jap single market and in late 2015 we released a range of ready to roar direct fit up kits with correct jetting and a few trick mods to make them work better than anything before on big Jap Thumpers.

  The fuel consumption is way less but when comparing with the stock carbs, it all depends on how having a lot more power and torque effects your riding habits. If you can manage to back off and just have your bike perform at its present level you’ll be surprised by the fuel economy, but of course when the same amount of throttle twist becomes front wheel lifting, breaking traction action, well it’s hard to not want to go and play. If you have more horses in the paddock and you want them all to perform, you have to feed them more hay!

  You will enjoy this new carb but do be sure to hold on tight on your first test ride as she may try to spit you off if you nail it to hard.

Additional Information:

Please Note: Other than exact replacement OEM carburetors, all Mikuni Aftermarket Carburetors and Tuning Components are sold “As Is” for Off Road / Racing Use Only and are not intended or approved for use on vehicles operated on Public Roads or in locations where applicable engine tampering and anti-pollution laws apply.

 Australian Shipping Information:

All shipping within Australia is via Australia Post only.

Please note that we are located at Townsville North QLD and that all standard shipping “Free Freight” travels by train from us all the way down the East Coast as far as Victoria. EBay freight times are estimates only and do not take in to account our location. We have express options available for all our products also. The freight times around Australia are as follows-

Standard or eBay “Free Freight”

Townsville to Brisbane 3 days, Townsville to North/Just South and West is usually 1-2 days,

NSW ACT & VIC 4-6 days, TAS & SA 4-8 days, WA & NT 8-12 days.

Express Freight

Anywhere in QLD except some rural areas is next day delivery. NSW ACT & VIC 2 days, TAS & SA 2-3 days, WA & NT 3-4 days.

Please note that weather events such as flooding, cyclones and other natural disasters etc will delay any ground freight. This is entirely out of our control if this occurs.

 International Shipping Information:

All international shipping is done through Australia Post Express Courier EMS service.

The international service we use is generally 4-5 Business days for delivery but can be shorter or longer.

 All international buyers are responsible for the payment of their domestic customs duties and taxes charged on imported goods. The duty-free threshold and duty/taxes payable rates differ from one country to another and we strongly advise you check your liability before ordering if unsure. Please check your tracking on all international shipments within 7 days to follow their progress and determine if it is being held by your local customs dept. or on their behalf by the Postal Service, who you will need to contact using the provided tracking number.

 As per the eBay terms and conditions, WE ARE NOT RESPONSIBLE AS A SELLER FOR YOUR COUNTRIES IMPORT DUTIES OR TAXES, WE HAVE NOT NOR WILL WE EVER PAY YOUR IMPORT DUTIES OR TAXES, OR REFUND ANYONE FOR THEM AND THEY ARE DEFINITELY NOT INCLUDED IN THE ITEM PRICE! PLEASE CHECK YOUR COSTS BEFORE MAKING THE PURCHASE! THIS IS JUST PLAIN OLD COMMON SENSE.

 Please also note that international parcels HAVE to be signed for and all parcels whether domestic or international are fully insured.

 Returns and Refunds:

Our business Warranty or Return period is 7 days only. We do accept eBay’s 30 day return policy but please read all the information below carefully before making your purchase.

THE FOLLOWING INFORMATION IS FINAL.

Here at Mikuni OZ we do offer refunds and returns but there are strict procedures for this.

All carburetor kits that need to be returned for refund or exchange MUST be returned in the exact same way they left the warehouse. All Carburetors & Carby kits that have been opened WILL BE thoroughly stripped and inspected, in the case of any fuel being added, greases or lubricants, tampering or any form of damage to the carburetor there will be ABSOLUTELY NO refund and the kit will be returned to you at your expense! THIS IS FINAL AND NO OTHER EXCEPTIONS!

Absolutely all returns for any reason will be charged a 10% restocking fee whether it has been opened or not before it was returned and the freight for us to send you the kit originally will be deducted also before your refund is issued.