Cart
Custom content
<p>This is custom content</p>

YD85/Avenger 85 - Complete 52mm Bore 2 Stroke Motorized Bicycle Engine Kit 85cc

$320.00
Tax excluded
Quantity
Add to wishlist

  Delivery policy

View here

  Return policy

View here

Guarantee safe & secure checkout

The newest design of the Avenger 85 2025 gas-powered two-stroke bike engine kit features a 52mm big bore, a four-hole balancing crankshaft, and an 80km/h top speed.

Cylinder design by Ken Hinson/ Kelly Cansler. Faster then Phantom 85 v3 v2 v1 aswell as lower displacement engines on the market BT, YD, LD and PK. 

The standard bike can be transformed into a motorized bike with this 85cc gasoline engine kit. You can enjoy riding at a faster speed—up to 80 km/h—after upgrading your bike. It makes your outdoor journey more convenient because it runs nearly as quickly as a motorcycle or scooter. Most 26" or 28" bikes with a V-frame can be fitted with this engine package.


Specification:

Mode of Engine: Single cylinder, air-cooling, 2-stroke

Bore & Stroke:52mm & 40mm

Rated Power:2.05Kw/5000r/min (3 horsepower/5000r/min)

Max Power:3.5Kw/6000r/min (5-6 horsepower/6000r/min)

Ignition Mode:CDI

Model of Chain: 415

Chain Length: 110 links

Compression Ratio:6:01

Driving Ratio:12.5:01

Fuel Type:No.90

Capacity of Tank:2L

Speed Limitation:80km/hour

Lubrication Oil: oil of 2-stroke petrol engine (Or oil for 10W/40.10W/30)

Type of Sparking Plug:Z4C 14MM

Volume of oil Consumption:2.5L/100km

Type of Clutch:Friction Plate / Dry

Cooling Mode:Natural air cooling

Fit for most type 24" 26" and 28" bikes, such as mountain bikes, road bikes,cruisers, choppers.


Extra notes: This engine features a four-hole balanced crankshaft, a larger cylinder head, a 12*16*12mm needle bearing, a high-performance CDI and magneto coil, and an a upgraded design of silencer.

Fuel/Oil Ratio recommend by manufacturer: 

New Engine (500km or approx 3-5 tanks):

20:1 or 50ml of oil per litre.

After Break In: 25:1

25:1 or 40ml of oil per litre.

IMPORTANT (Please read):

1.      In order to create a suitable steal on the intake and stop any air leaks, please do not remove the plastic insert or o-ring that comes with your carburator.

 

2.      An exhaust strapping kit will be included with every engine kit. Please use this to avoid exhaust snapping at welds alternatively, you can use a JB Weld Metal Strapping Kit.

 

 

3.      To prolong the life of these components, it is advised to clean and regrease the clutch arm, bucking bar, and bevel gear every few weeks.

 

 

4.      Fuel/Oil Ratio recommend by manufacturer: New Engine (500km or approx 3-5 tanks): 20:1 or 50ml of oil per litre. After Break In: 25:1 or 40ml of oil per litre.

Using a different oil ratio than what is advised may speed up engine wear and cause engine seize. Don't assume the ratios instead, use a two-stroke mixing container to measure the oil. Our engine kits come with a 30-day warranty from the date of delivery. If you use a different oil mix ratio, this warranty will be void.

19 Items

16 other products in the same category:

This website uses cookies to ensure you get the best experience on our website