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BIG BORE KIT, 462cc (Himalayan) This is supplied with liner instead of complete cylinder
Rather than supply the ready machined cylinder, this is a cheaper option where we supply the liner but requires a highly skilled engineer to machine your existing cylinder, fit the new liner and finish the bore.
The English made forged piston and liner will convert the standard 410 Himalayan to 462cc. Fits inside the existing crankcases without the need for any machining of the crankcases.
It is supplied with base gasket, chain tensioner gasket and 462cc head gasket.
Whilst the actual bigbore kit will physically fit all years, due to the update to the ECU required we can only supply this for the 2018 - 2021 fuel injection models where the standard ECU is located under the seat and the carburettor models.
We would recommend fitting some stronger clutch springs to help prevent any clutch slip (see related items below).
We can supply just the piston if required if you have the facilities to re-sleeve your own cylinder barrel.
FUEL INJECTED MODELS: A fuel controller will be required to optimise the fuelling, we offer both the Power Commander or the PowerTronic to achieve this (please see related items below). If you have already purchased a fuel controller from us, we can supply an upgraded map free of charge with the purchase of the big bore kit.
CARBURETTOR MODELS ** ONLY **: These may need to be re-jetted. As standard they have a 125 main jet and a 20 pilot jet and we would suggest purchasing the next two bigger sizes of each of these, in case they are required: 112180/130 - MAIN JET, 130 112180/135 - MAIN JET, 135 141977 - PILOT JET, 25 141977/275 - PILOT JET, 27.5 Note: These are listed as not being suitable for the Himalayan but in the case of Carburettor models they are.
Fitting Guide
Identify Your Model
On average over the last few years we processed over 750 orders each week, most of these were for Royal Enfields covering a span of over 80 years. During these years Royal Enfields made in Redditch and in India have produced countless different models and upgrades. It is therefore very important to know the exact model and year of your Royal Enfield before ordering. The accessory catalogue on our website is primarily aimed at the various models of Bullet from 1948 to present day, however there are an ever increasing number of parts which are suitable for any Royal Enfield or virtually any motorcycle
Shipping available to over 100 countries worldwide
We endeavour to despatch all our orders either the same day or within 1 working day of receipt, with very few exceptions. However, we cannot give an exact delivery date. In most circumstances UK parcels/packets under 2kg, and less than £150 in value, will be sent by Royal Mail first class mail, parcels over this weight and value would be sent by Parcel Force and should be delivered in 1 to 2 working days. Overseas parcels/packets up to 2kg, and less than £50 in value, will be sent by airmail small packets. Parcels over this weight and value will be sent by an international carrier service; this will depend on the weight, value and the destination country.
Click and Collect Available
Choose click and collect from the delivery method options in the checkout.
Please leave a minumum of two hours for us to pick and pack your order before you collect.
Collect from our store showroom
Hitchcock's Motorcycles
Oldwich Lane West
Chadwick End
Solihull
B93 0EY
UK
09:00 - 18:00 Monday - Friday
Please bring the credit card that you used to pay for the purchase along with the sales order (SO) number from your confirmation email.
Shipping available to over 100 countries worldwide
We endeavor to despatch all our orders either the same day or within 1 working day, with very few exceptions. However, we cannot give an exact delivery date.
UK Mail
For our UK customers, as a general rule, we use Royal mail First class mail if the parcel/packet is under 2kg and less than £150 in value. Orders shipped with Royal Mail should arrive within 5 working days to UK Mainland. Above these values, the parcel will be sent using Parcel Force or DHL Parcel and should be delivered within one to two working days.
Overseas and International Orders
Overseas and International parcels/packets below 2kg in weight and £150 in value can be sent tracked or without tracking using Royal Mail or DHL Global Mail. Above 2kg, above £150 or upon request, we offer a selection of international carrier services including tracking options and express delivery. If you do not request a specific delivery option, we will always choose the most cost effective service depending on location and package size. We offer a tracked service using Parcel Force or an express tracked service through DHL. For information regarding customs duty, fees and taxes, please view our full delivery information.
As the lockdown restrictions are beginning to be eased by the government in England, we have taken the decision to re-open our click and collect facility for our customers.
It is still necessary that we follow the guidance from the government concerning social distancing for retail shops so we are setting out the following conditions that must be adhered to by all to help protect you, the customer, and our staff.
Our showroom and counter will remain closed until further notice.
All orders must be placed over the phone or internet and paid for in full using credit/debit card prior to collection.
Please leave a minimum of two hours for us to pick and pack your order before you collect.
Orders cannot be amended at time of collection. Any alterations to orders must be arranged before your arrival at Hitchcocks.
Our staff will not be available for technical or sales advice on site.
On your arrival, please knock on the door and await a member of staff to bring out your order.
Hitchcock's Motorcycles
Oldwich Lane West
Chadwick End
Solihull
B93 0EY
UK
A new cylinder barrel that has had a larger diameter liner fitted with English made forged piston to convert the standard 410 Himalayan to 462cc. Fits inside the existing crankcases without the need for any machining.
It is supplied with base gasket, chain tensioner gasket and 462cc head gasket.
This will require the fitting of a ''Powertronics Controller'' to upgrade the standard ECU. If you already purchased this controller from us we can supply an upgraded map free of charge with the purchase of the bigbore kit.
