Best Bicycle Engine Kits for 26- to 28-Inch Bikes

#1 · Best Overall

1. IMAYCC Bike Motor Kit

• Weight: 11.14 kg

Best for: Hands-on 26-inch project builders.

Why it ranks #1: Its 80cc two-stroke kit is listed for 26- to 28-inch bikes, with installation guidance, a complete-kit description, and a stated one-year warranty.

IMAYCC gives first-time installers an unusually explicit planning window: allow about two to four hours for installation and fine-tuning. Its 80cc two-stroke kit is listed for 26–28-inch mountain, cruiser, and road bikes, helping buyers assess both project time and intended bicycle types before starting.

The product calls for basic hardware skills and tools, so it is better suited to a hands-on conversion than a no-work upgrade. The stated two-to-four-hour installation and fine-tuning window helps buyers reserve time for setup, while the instructions and suggested installation video provide preparation resources. Its 80cc engine kit is listed for 26–28-inch mountain, cruiser, and road bikes, and the 2.5-liter tank specifies the supplied fuel capacity.

Skip it if you want a conversion that avoids hands-on setup; IMAYCC specifies basic hardware skills, tools, and fine-tuning.

This fits a mechanically comfortable rider planning an 80cc conversion on a listed 26–28-inch bike and able to set aside time for installation. The stated skills and tuning requirements make it a less natural choice for someone seeking a plug-in upgrade.

Listed on Amazon as: IMAYCC Bike Motor Kit 80cc Motorized Bike Kit 2 Stroke Gas Bicycle Engine Conversion Kit Fit for 26-28" Bikes Black

#2 · Speedometer Included

2. Bikerid 80cc Kit

Best for: Commuters wanting speed feedback.

Why it ranks #2: The 80cc two-stroke kit fits most 26- to 28-inch bicycles, claims speeds up to 38 km/h, and lists a speedometer.

A supplied speedometer distinguishes Bikerid’s 80cc two-stroke conversion kit, giving riders a way to monitor speed during commutes, errands, or weekend rides. It is listed for most 26–28-inch bicycles and states a maximum speed of up to 38 km/h, combining a clear wheel-size range with a concrete performance figure.

The stated compatibility with most 26–28-inch bicycles helps narrow the fit question for owners looking to reuse an existing bike, and the listing says conversion does not require major frame modifications. Its high-torque output is presented as support for hill climbing, while the stated maximum of 38 km/h gives a speed reference for route planning. The included speedometer adds at-a-glance speed feedback during daily rides, errands, and outdoor trips.

Skip it if you need a stated power rating for comparison; this listing gives a speed figure but no power specification.

This is a fit for commuters and errand riders with a 26–28-inch bicycle who want speed feedback and a stated top-speed reference. The compatibility wording says most bikes, so the listed range does not establish fit for every frame.

Listed on Amazon as: 80cc 2 Stroke Bicycle Engine Kit, Gas Motorized Bicycle Conversion Kit with Speedometer, Fits 26" – 28" Bikes

#3 · Clearance Guidance

3. Borutools 80cc Kit

• Weight: 24.2 lb

Best for: V-frame bike owners checking clearance.

Why it ranks #3: Its 80cc kit lists fit for 26- and 28-inch V-frame bikes and specifies 9–11 inches of bottom-bracket-to-top-bar clearance.

Borutools specifies a 9–11-inch clearance requirement between the bottom bracket and top bar, a concrete frame check that can rule a bicycle in or out before an 80cc conversion. The kit is described for most 26- and 28-inch V-frame bikes, including mountain, cruiser, chopper, and road models.

The stated 9–11-inch clearance requirement gives buyers a measurable frame check before beginning a build, while the V-frame fit description identifies the general frame style the kit targets. Its listed compatibility with 26- and 28-inch mountain, cruiser, chopper, and road bikes broadens the named bike categories, but does not replace checking the clearance. The 80cc two-stroke engine is associated with a stated maximum speed of 38 km/h for commuting and leisure riding.

Skip it if you cannot meet the specified frame clearance; Bikerid 80cc lists 26–28-inch compatibility without this clearance figure.

This suits an owner of a 26- or 28-inch V-frame bike who can measure the specified bottom-bracket-to-top-bar clearance before buying. The 9–11-inch requirement is the key fit boundary, even for a listed bike style.

Listed on Amazon as: 80cc 2-Stroke Bicycle Engine Kit (80CC Black Engine)

#4 · Claimed Speed

4. JAYGOVAN 80cc Kit

Best for: Riders comparing stated engine output.

Why it ranks #4: The 80cc two-stroke listing specifies 2.58 hp and a claimed top speed of 23.61 mph, plus CDI ignition and fuel-use figures.

JAYGOVAN specifies 2.1 kW of output and a top speed of 23.61 mph for its 80cc two-stroke kit, giving buyers two concrete performance figures to compare. The listing also describes fuel use of approximately 0.53 gallons per 62.14 miles, which helps frame expected consumption alongside the stated speed.

The 2.1 kW output and stated 23.61-mph top speed provide separate reference points for riders weighing acceleration and pace for everyday trips. Its fuel-use estimate—about 0.53 gallons per 62.14 miles—is identified as a reference value, so it can inform planning without promising identical results on every ride. The kit is an 80cc, two-stroke bicycle motor set, and the listing also names CDI ignition as part of its described setup.

Skip it if you need a listed bicycle wheel-size range before choosing; this product information does not specify one.

This is for riders who want an 80cc two-stroke kit with published output, speed, and fuel-use figures for planning. Since the supplied information does not specify bicycle wheel sizes, it offers less fit guidance than a listing with a stated range.

Listed on Amazon as: 80cc Bicycle Engine Kit 2 Stroke Gas Bike Motor Kit Refit Full Set

#5 · Tunable Carburetor

5. YUNLAIGOTOP 100cc Kit

Best for: Tinkerers wanting carburetor adjustment.

Why it ranks #5: This 100cc air-cooled kit lists a tunable carburetor, upgraded CDI, 44-tooth sprocket, and a claimed maximum speed of 48 km/h.

A tunable carburetor with a re-jettable main jet gives YUNLAIGOTOP’s 100cc kit a hands-on adjustment angle for riders prepared to work on engine setup. The kit also names a 44-tooth sprocket and upgraded CDI, while its specifications list air cooling and a maximum speed of 48 km/h.

The carburetor’s choke lever is on the handlebars, and its main jet can be re-jetted; the idle RPM and idle-air screws provide additional named adjustment points. These details suit owners who want access to tuning controls rather than a fixed setup. The 44-tooth sprocket and upgraded CDI are included in the described kit, while air cooling and a listed 48 km/h maximum speed help define the engine package and its stated operating performance.

Skip it if you need electric starting; this kit specifies kick starting, while the Tiozuiu 100CC four-stroke kit lists hand start.

This suits a hands-on rider who wants a 100cc kit with adjustable carburetor controls and a stated speed figure. Its listed kick starting is a practical boundary for buyers who specifically want an electric-start system.

Listed on Amazon as: 100cc Bicycle Engine Kit 2 Stroke Motorized Bicycle Engine Motor Kit Gas Bicycle Engine Conversion Kit with Air-Cooling, Bike Motor Kit Fit for 26"-28" Bikes

#6

6. dkfgtna 100cc Kit

• Weight: 22.4 lb

Best for: DIY riders seeking a stated speed.

Why it ranks #6: The 100cc two-stroke kit lists a 2L tank, CDI ignition, air cooling, and a claimed maximum speed of 28 mph for 26- to 28-inch bikes.

A maximum speed of 28 mph is the headline performance figure for dkfgtna’s 100cc two-stroke conversion kit, giving riders a concrete pace reference for a motorized bicycle project. The kit is listed for 26- and 28-inch bikes and pairs its engine with a 2-liter fuel tank, air cooling, and CDI ignition.

The 100cc two-stroke engine is listed with a maximum speed of 28 mph, giving buyers a stated upper-speed reference rather than an unspecified performance claim. Its 2-liter fuel tank identifies the supplied capacity for trip planning, while air cooling and CDI ignition specify two parts of the engine setup. The stated 26- and 28-inch bike fit range helps owners check whether their bicycle falls within the intended wheel-size categories before planning installation.

Skip it if you need a stated fuel-use estimate to plan range; this kit provides tank capacity but no consumption figure.

This suits a DIY rider with a 26- or 28-inch bike who wants a 100cc two-stroke kit with a stated 28-mph maximum. The 2-liter tank is specified, but fuel consumption and resulting range are not.

Listed on Amazon as: 100cc 2 Stroke Bicycle Engine Kit, Bicycle Motor Kit Ebike Conversion Kit w/ 2L Fuel Tank Single Cylinder Air-cooling & CDI Ignition for 26" 28" Bikes DIY Motorized Bicycle Bike

#7

7. Ubnffsv 100cc Kit

Best for: Longer rides between refueling.

Why it ranks #7: Its 100cc two-stroke listing gives a 440-pound maximum load, 0.53-gallon fuel tank, and 36-tooth sprocket for most 26-inch and 28-inch bikes.

A 0.53-gallon fuel tank is the key practical detail of Ubnffsv’s 100cc two-stroke kit, intended to support longer journeys between refueling stops. Its listing also gives fuel consumption of around 0.66 gallons per 100 km and names a 36-tooth sprocket, offering buyers capacity and consumption figures to consider together.

The 0.53-gallon tank capacity indicates the fuel volume carried, while the stated consumption of around 0.66 gallons per 100 km gives a separate reference for planning; actual range is not specified. The 36-tooth sprocket is named as part of the kit, and the listing identifies CDI ignition and air cooling. It is described for most 26-inch and 28-inch bikes, giving owners of those wheel sizes a starting point for checking a conversion.

Skip it if you need a stated long-distance range rather than tank capacity and consumption figures; this listing does not specify total range.

This suits a rider considering longer outings on a listed 26- or 28-inch bike and wanting the tank capacity and fuel-use reference stated upfront. Since total range is not given, those figures do not establish distance between stops.

Listed on Amazon as: 100cc Bicycle Engine Kit, 2 Stroke Upgraded Bike Motor Kit Air-Cooling Gas Engine Motorized Bicycle Kit with CDI Ignition Mode & 36-Tooth Sprocket for Most 26inch/28inch Bikes Scooter

#8

8. Tipyoumall 110cc Kit

• Weight: 11 kg

Best for: Fuel-conscious 26–28-inch bike converters.

Why it ranks #8: The 110cc kit includes a 36-tooth sprocket and claims 150 miles per gallon, but its listed fit is limited to 26- to 28-inch bikes.

A stated fuel economy of 150 miles per gallon is the clearest draw of Tipyoumall’s 110cc two-stroke kit, giving riders a specific efficiency figure to weigh when converting a compatible bicycle. The package includes a 36-tooth sprocket and tool kit, with four bolts used to attach the engine to the frame.

The 110cc engine is listed for 26–28-inch bicycles, so the intended wheel-size range is clear before a project begins. Its 36-tooth sprocket is included in the kit, and the listed tool kit provides tools for the conversion workflow. The stated 150-mpg figure offers a fuel-use reference, while the break-in instructions call for 8 ounces of two-stroke oil per gallon of gas. That fuel-mixing requirement is important to account for during initial operation.

Skip it if you want a kit with a listed speed figure; this product specifies fuel economy but no maximum speed.

This suits a rider converting a 26–28-inch bicycle who values the stated fuel-economy figure and included tool kit. Keep the break-in oil-mixing requirement in mind, and treat the listed fit range as the key starting point for the build.

Listed on Amazon as: 110cc Bicycle Engine Kit, Updated 2 Stroke Motorized Bike Engine Motor Kit for 26"- 28" Bikes Bicycles Petrol Gas Powered Super Fuel-efficient Fit Modified Full Set

#9

9. Tiozuiu 110cc Kit

• Weight: 24.7 lb

Best for: Short-trip 110cc conversion projects.

Why it ranks #9: This 110cc two-stroke kit is listed for 26- or 28-inch bikes and includes air cooling and a CDI system, but provides limited fit detail.

A listed operating speed of 6,000 rpm sets Tiozuiu’s 110cc two-stroke kit apart for buyers comparing engine figures for a bicycle conversion. The listing names 26- or 28-inch bikes as its intended fit and describes a complete kit, making it relevant to riders planning a motorized setup for commutes and short trips.

The 110cc two-stroke engine and stated 6,000-rpm figure give buyers a concrete basis for judging the engine setup, while the 26- or 28-inch fit range identifies the listed wheel sizes. The product description presents the package as a complete conversion kit with parts and accessories, which can simplify parts gathering for the project. Air cooling and a CDI system are also named, providing specific engine-system details to consider during selection.

Skip it if you need a stated maximum road speed to compare kits; this listing provides rpm but no road-speed figure.

This suits a rider planning a 110cc conversion on a 26- or 28-inch bike who wants air cooling and CDI named in the specifications. Consider the missing road-speed figure if speed is central to choosing an engine kit.

Listed on Amazon as: 110CC Bicycle Engine Kit, 2-Stroke Gas Motorized Bicycle Conversion Kit, Gas Powered Engine Motor Kit with Air Cooling and CDI System,Gas Bike Bicycle Motor Engine Kit Fit for 26"or 28" Bikes, Black

#10

10. Tiozuiu 100cc 4-Stroke Kit

• Weight: 42.3 lb

Best for: Four-stroke hand-start conversions.

Why it ranks #10: This is the only listed 4-stroke option, with a 3.5 hp engine and 44-tooth sprocket, but the supplied details do not specify bike wheel fit.

A four-stroke engine distinguishes Tiozuiu’s 100cc bicycle conversion from the two-stroke kits in this roundup, giving buyers a different engine type to consider. This single-cylinder model is listed at 3.5 hp and 3,600 rpm, with air cooling, hand start, and a 44-tooth sprocket included in its described configuration.

The four-stroke, single-cylinder engine is specified at 3.5 hp and 3,600 rpm, giving buyers output and operating-speed figures for comparing the conversion. Air cooling is named in the title, and hand start identifies the starting method to plan for when operating the bike. The 44-tooth sprocket is part of the stated full set, while the included English manual and assembly accessories support the installation workflow. The listing does not state a bicycle wheel-size range.

Skip it if you need a stated bicycle wheel-size range; Tiozuiu 110CC two-stroke lists 26- or 28-inch bikes.

This is for buyers specifically considering a 100cc four-stroke kit with hand start and a 44-tooth sprocket. Its output details are clear, but the supplied listing leaves bicycle wheel-size compatibility unspecified, so fit remains a key boundary.

Listed on Amazon as: 100CC Bicycle Engine Kit, 4-Stroke Gas Motorized Ebike Conversion Kit, Hand Start Air-Cooling Bike Motor Kit, Single Cylinder 3.5HP Bike Motor 3600 RPM, 44-Tooth Sprocket Full Set