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BIGBORE KIT 865CC, SUPPLIED AS READY TO FIT CYLINDERS, 650 Super Meteor + 650 Shotgun + 650 Classic
This big-bore conversion is pre-installed in a brand-new set of Royal Enfield cylinders, allowing for a straightforward bolt-in replacement of the original units. It converts the 650cc platform to 865cc by taking the standard 78mm bore to 90mm whilst raising the compression ratio from 9.5:1 to 11:1.
This is a bolt on set of machined cylinder barrels with matched pistons ready to fit.
This upgrade transforms the performance output, massively increasing both torque and horsepower (see dyno graphs attached).
When making internal engine modifications such as fitting a big-bore kit, it is necessary to optimise fuelling through the use of a fuel controller. We recommend using either a Dynojet Power Commander or a PowerTronic fuel controller.
To maximise the benefit of the bigbore kit you need to consider the following: Clutch upgrade (we find the added torque causes the stock clutch to slip) Performance Camshaft Free flow exhaust system Free flow intake
Suitable for the Royal Enfield 650 Super Meteor, 650 Shotgun or 650 Classic.
Note, Royal Enfield list the cylinder head bolts as one time use (part number 575620 shown in the related items below, qty of 8).
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 7.5kg and less than £200 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 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. We offer a tracked service using Parcel Force or an express tracked service through DHL or UPS. For more information regarding customs duty, fees, taxes, and shipping, please view our full delivery or customs 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
