AJP SPR 510R - 2021 Specifications and Reviews

The 2021 AJP SPR 510R is a lightweight enduro bike designed for adventure-seeking riders tackling both on and off-road terrain. Powered by a 501cc single-cylinder four-stroke engine producing 38 horsepower, it combines nimble handling with reliable performance. Known for its fuel-injected efficiency and accessible power delivery, this middleweight excels as an entry-level adventure platform for riders exploring diverse riding conditions.

2021
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General information

CategoryEnduro / offroad
Year2021
ModelAJP SPR 510R
 
 

Engine and Transmission Specifications

Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemOil & air
Lubrication systemWet sump
Fuel controlDouble Overhead Cams/Twin Cam (DOHC)
Fuel systemInjection. Get fuel injection 45mm
Valves per Cylinder4
Bore x Stroke97.0 x 67.5 mm (3.8 x 2.7 inches)
Compression12.9:1
Power38.0 HP (27.7 kW)
Engine typeSingle cylinder, four-stroke
Capacity:501.0 ccm (30.57 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakesSingle disc. Single-piston caliper
Diameter260 mm (10.2 inches)
Front brakesSingle disc. 2-piston calipers
Rear tire140/80-18
Front tire90/90-21
Rear wheel travel300 mm (11.8 inches)
Rear SuspensionZF Sachs progressive system with reservatory fully adjustable
Front wheel travel300 mm (11.8 inches)
Front SuspensionZF Sachs Ø48mm fully adjustable
Frame typeAluminum/steel/Composite

Physical measures and capacities

Fuel capacity9.50 litres (2.51 US gallons)
Wheelbase1450 mm (57.1 inches)
Ground clearance355 mm (14.0 inches)
Seat height960 mm (37.8 inches) If adjustable, lowest setting.
Power/weight ratio0.3193 HP/kg
Dry weight119.0 kg (262.4 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
CommentsPortuguese made bike.
StarterElectric
Color optionsWhite/red/black

Performance Profile & Rider Fit

38 hp
Peak Power
5.5s
0-60 mph

Best For

Track20%
City30%
Cornering55%
Daily Riding25%
Touring20%
Passenger5%

Rider Profile

Best ForThis bike suits confident, skilled riders comfortable with a tall, lightweight, aggressive enduro machine rather than newcomers to motorcycling.
PurposeBuilt as a hardcore offroad and enduro weapon, it excels at trails, technical terrain, and competition-style riding rather than commuting or highway use.
Rider FitThe tall 960mm seat height and minimal weight favor taller, physically fit riders who can handle standing riding and aggressive body positioning.
CharacterIt rewards an adventurous, dirt-focused rider who enjoys precision handling, standing attack riding, and minimal creature comforts.
Not Ideal ForThis is not the right bike for riders wanting a comfortable commuter, a passenger-friendly tourer, or a plush long-distance highway machine.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2021 AJP SPR 510R Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 960mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2021 AJP SPR 510R, with a cramped knee angle of around 85 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
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MotorcycleDB Review

The 2021 AJP SPR 510R is a high-performance, lightweight dual-sport motorcycle that offers a perfect balance of power and agility. With a powerful 510cc engine and top-notch suspension components, this bike is designed to handle any terrain with ease. The sleek and modern design of the 510R makes it stand out in a crowded market, while its comfortable ergonomics and advanced features ensure a smooth and enjoyable ride for any adventure or off-road enthusiast. AJP has truly delivered with the 2021 SPR 510R, offering a top-of-the-line dual-sport motorcycle that is perfect for both on and off-road riding. From its powerful engine to its durable construction, this bike is a solid choice for anyone looking for a reliable and versatile motorcycle. With its exceptional performance and stylish looks, the 510R is a top contender in its class and a great option for riders who want a versatile and capable dual-sport machine.
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