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Item condition:
02 Aug, 2012 11:57:00 BST
£55.00 Parcelforce Global Priority | See details
International items may be subject to customs processing and additional charges.  help icon for delivery - opens a layer
Item location:
Birmingham, West Midlands, United Kingdom


eBay item number:
Seller assumes all responsibility for this listing.
Last updated on  25 Jul, 2012 15:19:07 BST  View all revisions
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Item specifics

Condition: New Gender/ Age: Unisex Adults'
ebay add




As many of you have experienced on previous shipments
these are usually sold out before they arrive in the U.K.

So if your after the best kit your money can buy
pre-order yours now to avoid disappointment.




28th of SEPTEMBER 2012

The Best Just Got Better, Our Best Engine Ever...



Evo4GT Logo

New design EVO4GT engines and kits feature:

Big fat M8 studs for the Cylinder head instead of the standard M6.
Big fat M8 studs for the front motor mount instead of the standard M6.
Big fat M8 studs on the rear motor mounts instead of the standard M6.
NT speed high flow carburetor.
The new EVO4GT will be all black in color.
A proper external fuel filter with every kit.
An improved heavy duty all black clutch lever.
A larger chain idler assembly and wheel instead of the small ones that we have now.
All-round better cleaner stronger castings.
Branded spark plugs.
Improved crank and piston, better materials for longer endurance.
Completely Matt black exhaust pipe for a slick carbon look.
Improved exhaust mating surfaces and ports.
A new U type front motor mount, this will fit it onto a more varied range of frames.
Improved petrol tanks with a higher lip to solve the problem of fuel leaks.

Angle-fire heads installed as standard.

High quality P5 precision rated C&U bearings (quality comparable to FAG or SKF)
High quality stainless steel socket head cap screws on magneto, chain and gear covers.


(bikes are NOT included !!!!)

Travel Over 30 mph For 120 Miles On Less Than £3.00 on Your Bicycle Without Pedaling using the Most Advanced, 100% Guaranteed Bicycle Engine Kits On the Planet!

Save Over £1,000 Per Year!!

90-Day Factory Warranty!

Weighs Less Than 20 lbs.!

Install In One Afternoon With Full Technical

Support For UK Customers !

Demonstration Video Created
By Myhremedia

OK, so what exactly is a 'Bicycle Engine Kit'? Plan B...

That’s right: A bicycle engine kit is your Plan B because it transforms your ordinary bicycle into whatever you need it to be, including:

Hand Cash: Who can afford a new car these days – or the petrol to drive it?! Invest in a high quality bicycle engine kit and you can save well over £1,000 per year on petrol and maintenance costs!

Hand More Sleep: Tired of waking up at the crack of dawn every day and fighting traffic and that aggravating commute? At 30 mph, motorized bicycles can blow past bumper-to-bumper traffic – for less money and less stress! Bicycle engine kits are also perfect for university students!

Hand Life Saver: License suspended? Recent car accident? When the unexpected happens – you still need to get to work, buy groceries, attend classes, etc. Motorised bicycles are life savers when the unexpected happens (and it always does!) because life moves too fast not to have reliable transportation! ** Does not apply to U.K customers read terms and conditions at the bottom of the page please.

Bicycle engine kits transform your ordinary 26" mountain bike into your very own Plan B— oh, and did we mention that they're loads of fun too?!

You can still pedal the bike and ride it like normal whenever you like because the engine is started only when you release the clutch lever—no rope pulling here! With the push of a button you can just as easily stop the engine and go back to pedaling whenever you wish. Depending on your gear ratio, you can hit speeds up to 30 mph and travel more than 120 miles—on less than £3!

No Worries—Britney Spears Could Install a Bicycle Engine kit!

Yes—it really is that simple! With nothing more than some simple hand tools and our incredibly brilliant step-by-step instructions—ANYONE can transform their mountain bike into a motorized bicycle in just a few hours—GUARANTEED!

We scoured the planet and invested more than £50,000 to find the highest quality bicycle engine kits and then hired engineers to find the fastest, simplest installation process possible—and they did! Even if you have never built anything in your entire life—you can install our kit and be riding the very same day! In fact, you only need three things to install your bicycle engine kit:

Hand picture A Few Basic Hand Tools (e.g. spanners & screwdrivers)

Hand picture Ability to Read English

Hand Picture 3-5 Hours of Your Time

Hand Picture Mountain Bike / Regular Bicycle

Mountain bike requirements: No back suspension, 20" frame size or above; 70 degree angled "V" frame; Frame at least 14 inches from top of peddle crank to the top of the tube of the frame. No rear disc brakes and rear rim should be 36 spoke pattern. Click here for a diagram of the frame requirements.

Using our professionally created and precise step-by-step instructions, you can completely transform your mountain bike into a fully operational motorized bicycle in just a few hours! And here's the best part because unlike our foreign-based competition selling from who knows where…

We Have a Team of Dedicated Professional Technicians Standing By To Help You From Start To Finish!

The number one problem with most bicycle engine kits is customer service—more precisely, the lack of customer service! Even if a foreign supplier DOES have a customer service department (and most don't!)—your odds of actually dealing with someone who speaks and reads FLUENT English are slim to none!

At TransformerCycles, we have a dedicated staff of professional technicians standing by for full e-mail and support! We will be here every step of the installation process and whenever a problem or issue arises with your bicycle engine kit!

You don't have to worry about spending who knows what on long-distance charges to places most of us can't pronounce because we are UK based and operated. All parts and warranty work are located and performed here within the UK so you need not worry about massive shipping charges for warranty work in China or other far off lands (Remember, the kit weighs around 19 lbs)!

But Don't Take Our Word For It…


"…now I actually get home with enough energy to study!"

"I will be the first to admit—I am no "Gear Head"…but with a full course load and an apartment 6 miles off campus, I didn't just want—I NEEDED to motorize my bicycle! I would get home from classes so tired after having to pedal up hill after hill—I didn't have an ounce of energy left for my studies! Even though I can barely fit a light bulb properly—the ongoing help and guidance from your team helped me transform my bicycle into my own personal savior! I installed the 48cc engine kit with your help and now I actually get home with enough energy to study!"

Julian Hansome, Cambridge. UK


"…you guys literally saved my job and the service after the sale is absolutely world class!"

"I wanted to personally thank all of you for your help installing my bicycle engine kit because it literally helped save my job after my license got suspended! I needed reliable transportation fast and I had the kit fully installed the same day it arrived! I used e-mail support and your emails literally came in faster than I could read them—including pictures, and step-by-step illustrations! Then, you blew my mind and evened phoned me direct to walk me through the last bits personally! Your service is phenomenal and you guys are even helping me learn how to properly maintain my motorized bike. You guys literally saved my job and the service after the sale is world class!"

Mark Appleby , Bristol. UK


Even Our International Customers Love Us !

"the kit comes with very clear install instructions and I got full email and telephone support until my engine was working on my bike, and they still keep helping me with the maintenance.

David Byrne, Spain


Buy now button

Not Only Are Bicycle Engine Kits Easy To Install, Motorized Bicycles Are Even EASIER To Operate!

Engage or Turn Off Engine With Ease—No Ropes, No Keys, No Worries...

Our kits include a 44-tooth 9-hole chrome racing sprocket with an easy-to-install 9-bolt universal mounting hardware. This clamps easily over the rear wheel hub and spokes creating a totally independent drive sprocket and chain that will not interfere with your current drive chain or peddling! With built-in clutch, you can pedal, shift, and ride your bike like normal whenever you wish. When you do want to engage the engine, simply release the clutch and it instantly springs into action and takes over! We also supply you with a kill switch to turn the engine off instantly whenever you like. No ropes. No Keys. No Worries.

Imagine Driving Around All Week on Just 1 Litre of Petrol…

Hand Fewer Impulse Buys: While others are wasting their time and money at the petrol station, you are zipping along to wherever at 30 mph for a fraction of the cost. Fewer trips to the petrol station means fewer temptations to waste even more money on snacks and other "impulse buys".

Pound imageHand Lower Maintenance Costs: You could literally buy 4 bicycle engine kits a year for what the average car owner spends on repair/maintenance costs. Plus, while you practically need to be a rocket scientist to work on cars these days, a motorized bicycle can be maintained by anyone with just a few simple hand tools and our year-round support! Even if you only use your motorized bicycle ½ of the time, this will greatly reduce the wear and tear on your vehicle—and save you loads on maintenance/repair costs each and every year!!

Hand Save £ Hundreds Each Year on Petrol: Even if you only use your motorized bicycle ½ the time, you are still going to save hundreds each year on petrol costs. Don't be fooled—petrol costs are only going to increase and electric bikes are no realistic alternative! TransformerCycles engine kits literally pay for themselves in just a few months in petrol savings alone!

TransformerCycles engine kits literally Pay for Themselves in Just a Few Months in petrol savings alone!

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Each kit includes Everything You Need to Convert Your Ordinary Bike Into an Efficient, Safe, and Economical "Superbike"

Here are some technical specs on our very popular 69.7cc engine kit (will be replaced by the new EVO4GT mentioned above):

Type: Bicycle Engine Kit
Model: 69.7cc Starfire Generation GT4
Engine type: Single cylinder, air-cooled, 2-stroke
Ignition Mode: CDI
Fuel type: Unleaded
Lubrication Oil: 2 Stroke oil (synthetic is better)
Mixing Ration for Fuel and Oil: 18:1 for new engine (25:1 after running 500Km)
Spark Plug: NGK-B6HS
Clutch Type: Friction Plate / Dry
Speed Limitation: 25 - 30 miles per hour
Packaging Picture
Engine Picture

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Don't Waste Your Money on Electric Bike "Wannabe's"!

We know there are loads of sites out there selling electric bicycles—but don't waste your money on these "under-powered" bikes because they will only leave you stranded at the worst times! Electric bicycles are heavier, slower, and have a very limited range when compared to our petrol-powered motorized bicycles! With some proper maintenance and a full tank of petrol, our motorized bikes will get you from A to Z in less time and without worry—oh, and did we happen to mention that they're LOADS of fun?!

It's True What They Say: "Once You Go Motorized…"


"My three electric bikes are now redundant…"

''I use the bike everyday that's approx. 20 miles and it's the best cycle I have ever purchased—I can't believe how fun it is just to ride a bike again! My three electric bikes are now redundant but I keep them around as backups in an emergency. I am seriously considering asking would you make another but that will not be until later this year.

'' R.Higgs – Gloucestershire, UK.


"This is truly the best bicycle engine kit on the planet!"

"This is truly the best bicycle engine kit on the planet and completely blows my electric bicycle away! Trust me, I've even tried other cheap imitations from abroad and totally wasted my money. Many thanks for your support during fitting."

J.Ali - Birmingham, UK.



90 Day Waranty
Order Your Bicycle Engine Kit Today Absolutely Risk FREE With Our Industry-Shattering 90-Day Factory Warrantee!

Have you seen those sites or e-Bay people promising a 12-month warranty on their bicycle engine kits? Don't be fooled—NO ONE offers a 12-month warranty on the ENGINE ITSELF! These "scam artists" are only giving you a 12-month warranty on the accessories—not the engine itself!

When you order from TransformerCycles, you have the peace of mind knowing that your purchase is 100% risk-free for the first 90 days! Unlike our competition who is just out to make a fast buck, your purchase comes with a 90-day factory warranty on the engine itself (terms and conditions apply)!

Plus—We Stock all The Parts and Perform All Warranty Work Right Here Within the U.K!

Don't dare order your bicycle engine kit from some foreign distributor 1,000's of miles away—what happens when you need to ship it back for warranty work (remember, most of our competition is selling cheap knock-offs that constantly need maintenance and replacement parts!)?


And You Don't Have To Wait Around For Weeks To Get Your Bicycle Engine Kit!
24 hour delivery

What could be more frustrating than sitting around for week after week waiting for your motorized bicycle kit to arrive from China, Indonesia, or wherever!?!? Just imagine how disappointed you will be if after waiting all that time you then need to turn around and ship it back because of some fault or other!!

TransformerCycles now delivers your bicycle engine kit by 24-hour parcel force—so you'll get your kit in 2 days MAX!! We understand that our customers don't want to be waiting around for their kit to arrive in the mail—they want to be out riding them! You will be provided with a tracking number after placing your order so you can watch your bicycle engine kit ship directly from our warehouse straight to your door—in 2 days or less!

Get your kit within 2 days (Mainland U.K)
Europe kits delivered in 5 - 6 days
USA kits delivered in 8 - 10 days
International orders contact us first for shipping costs

Buy now button

Place Your Order Today And Get These Bonuses Absolutely FREE!!

Bonus #1: Engine Maintenance "Tool Kit"

Unlike most electric bikes that are almost impossible to repair or maintain—our top quality engines are easy to maintain and we will be glad to help! Order today and we will also send you a complete engine maintenance "tool kit" absolutely FREE that includes:

Hand Gear Puller Tool

Hand Spare Exhaust Gasket

Hand Extra Motor Mount

Hand Extra Head Gasket

Hand 2 Extra Cylinder Head Studs

Hand Cylindrical Wrench

Hand Spare Spark Plug

Hand Step-by-Step Maintenance Manual

And no worries if you get stuck because that's what we're here for! That's right, TransformerCycles believes in full service AFTER the sale and we will be happy to help you learn how to maintain your bicycle engine in top form! This "tool kit" has a retail value of over £47 but its yours absolutely FREE when you ORDER NOW!!

Bonus #2: Custom Throttle w/ Kill Switch

Your bicycle engine kit already comes with a standard throttle cable but we will throw in this custom throttle with kill switch absolutely FREE when you order today! Order now and we will throw in this £22 custom throttle w/ kill switch absolutely FREE!

Bonus #3: Heavy Duty Clutch Lever

Your bicycle engine kit comes with a standard clutch but we like to take care of our customers so we are throwing in this £22 Heavy Duty Clutch Lever FREE when you order your kit today! Don't delay—order now!


No Need To Order Separately ! Order your kit TODAY and we'll include the custom throttle with kill switch and matching left grip totally FREE of charge..

Clutch Lever

No Need To Order Separately ! Order your kit TODAY and we'll even include the new style clutch lever with locking button totally FREE of charge..










Bike 3

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Other kits may look similar and be tooled up the same—but they are merely cheap, imitation knock-offs!

You might as well buy an electric bike rather than waste your time with cheap imitation knock-offs from China because the aggravation and frustration will drive you bonkers!

Wherever you buy your kit from make sure it is covered by warranty, and make sure you can get parts for your investment in the future and having a reliable source will make all the difference. Remember with bicycle engine kits you get what you pay for, a cheap kit will be fun for awhile but leave you stranded when you need it most!

For U. K customers a very important NOTE: if you decide to buy your kit from abroad remember there is no warranty for kits purchased from outside a sellers country. If you have a problem it will be very difficult to sort out. Also bear in mind that you will have to pay customs charges for packages coming into the U. K. (this is something many people forget!).

When you buy your bicycle engine kits from TransformerCycles, you have the peace of mind knowing that we offer:

Hand FREE 24-Hour UK Shipping

Hand Iron-Clad 90-Day Factory Warranty on Engine Itself!

Hand Full Technical Support (in English) After the Sale!

Hand All Parts/Warranty Work Provided Here in UK!

Hand FREE Maintenance Kit & Upgraded Throttle/Clutch Lever!

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UK Customers: will now have to register their completed vehicle as a moped (under 50cc) or a motorcycle (over 50cc) if to be used on british roads, this involves reg, tax and insurance and a vehicle saftey check by VOSA. We make no claims as to wether these kits will pass such tests, it depends on the quality of the work of the installer and upon satisfying all the criteria set out by VOSA before one can register the finalized vehicle. This has allready been done in the U.K by some of our customers. Contact us for further details if you want to go this route.

Private off road use has no restrictions in terms of legalities and can be used without any of the above for UK. Rest of the world check with your local authorities.


As with operating any motored vehicle, Operating this motorized bicycle or bicycle engine kit involves some risk of serious bodily injury . Buyer accepts responsibility for any and all vehicle operation that may lead to personal injury, economic loss, social distress, other losses, costs and damages. Seller is not responsible for injuries and/or damages resulting from operating this motorized bicycle or bicycle engine kit.

This motorized bicycle kit is not for use by persons under 18 years of age. You EXPRESSLY UNDERSTAND that buyer agrees to accept all responsibility after purchase of this motorized bicycle kit.

It is the responsibility of the buyer to find out and abide by all local and state laws when operating this petrol engine kit on public roads.


Business Returns Policy:


We will accept returns within a 14 day period for a refund providing the box has been unopened and the goods unused. The buyer is responsible for the cost of returning the goods.

If the box has been opened we will charge a 20% restocking fee as we can’t sell the items as new again and we will have to sell as parts, we will also minus any postage costs from the refund.

Think about it, you wouldn't want us to send you something that has been used by someone else when it’s advertised as "BRAND NEW", we find it really annoying when companies do that. By adhering to the policy above we can guarantee that our customers get a "BRAND NEW" kit fresh from the factory every time and not something that’s been returned by someone else or a refurbished item.

All items sent by courier must be checked before they are signed for, if damaged you must write damaged in the signature box otherwise insurance claims will not be accepted by the courier company.

We think the above policy is fair and reasonable for all parties involved in the transaction.


90 Day Warranty Terms & Conditions:

Q. How does it work?

All Transformer Cycles kits are manufactured to the highest possible standards, but we do understand that sometimes things can go wrong, and so we have tried to make the process of getting you back on the road as simple as possible.

There are two ways that we do this:

1. If any of your kit should fail under normal operation within 90 days of the date of purchase, all you have to do is send the damaged parts/part to the address below with your engine serial number. We will inspect the parts and send out your replacements immediately. The replacement parts will be covered by your warranty but you will have to pay the weight of the postage cost of sending the items to you. We will request this payment before we send your replacement parts out. Please note we do not make anything on the postage cost you pay exactly what it costs.

2. For those of you who are not confident enough to do the repair work yourselves you should send in only the engine with carburettor and throttle cable. Do not send in the front or rear motor mounts and the motor mounting studs. We will notify you as soon as we receive your engine and our technicians will inspect. Depending on the damage or the fault, we will either repair or replace the whole unit for you. Again all the expenses will be covered by warranty but we will ask you to pay the postage cost of sending the repair or replacement back to you. Once this has been received it will be sent out immediately.

3. Address to send to:

Returns & Warranty Dept:
Transformer House
24 Theresa Road
B11 1HB

In both cases you should contact us beforehand to receive authorization for your warranty. You must include your engine serial number with anything you send to be repaired or replaced and the return address that you would like the repair or replacement sent back to as well.

Our stated turnaround time on paper is 30 days but we usually get this done within a week or so. So just bear with us, we will have you back on the road.

What is not covered by warranty?

1. Breaking head bolts or stripping studs due to over tightening.
2. Piston seizure due to not following the correct fuel ratio.
3. Scratches or dents from your bicycle falling over on its side.
4. Items which are considered consumables e.g. throttle cables, clutch cables, clutch pads etc.

And that's about all there is to it really.


Business seller information

Transformer Cycles Limited
Company registration number: 6418509

Returns policy

Return policy details
If there is a return policy on this item, full details will be shown within the listing.
Most purchases from business sellers are protected by the Consumer Contract Regulations 2013 which give you the right to cancel the purchase within 14 days after the day you receive the item. Find out more about your rights as a buyer - opens in a new window or tab and exceptions - opens in a new window or tab.

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