SKU: 62003060257

HKM-515731 750W Electric City Bicycle, 48V E-Bike with 7-Speed Gears, Aluminum Alloy Frame, 26" Wheels

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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21

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Description

HKM-515731 750W Electric City Bicycle, 48V E-Bike with 7-Speed Gears, Aluminum Alloy Frame, 26" WheelsHKM 515731 750W Electric City Bicycle Precision engineered for the modern urban explorer. The HKM 515731 merges a featherlight 6061 aluminum frame with a high torque 750W rear hub motor, delivering refined power, intuitive pedal assist, and a battery that keeps pace with your daily rhythm all wrapped in a sleek, confident design. Up to 20 mph (32 km h) 19 37 miles (31 60 km) Range 48V 14Ah Lithium Battery Hydraulic Disc Brakes Designed Around Your

HKM-515731 750W Electric City Bicycle

Precision-engineered for the modern urban explorer. The HKM-515731 merges a featherlight 6061 aluminum frame with a high-torque 750W rear hub motor, delivering refined power, intuitive pedal assist, and a battery that keeps pace with your daily rhythm — all wrapped in a sleek, confident design.

Up to 20 mph (32 km/h)
19 – 37 miles (31 – 60 km) Range
48V 14Ah Lithium Battery
Hydraulic Disc Brakes

Designed Around Your Ride

750W Rear Hub Motor

Responsive acceleration and consistent torque. The rear‑hub layout delivers balanced propulsion that feels natural from the first pedal stroke, climbing moderate hills without hesitation.

48V 14Ah Lithium Battery

Integrated energy cell with smart BMS protection. Delivers 19–37 miles (31–60 km) per charge, fully replenished in just over 3 hours — ready for your morning commute or evening unwind.

7-Speed Drivetrain

Shimano-compatible cassette with precise indexing. Seamlessly adapt to headwinds, gentle inclines, or open flats — the right gear is always a click away.

Hydraulic Disc Brakes

Mineral-oil hydraulic system front and rear. Progressive lever feel, fade‑resistant performance in wet conditions, and confident stopping distances — safety without compromise.

Refined Power Delivery

The 750W brushless rear hub motor is calibrated for smooth, quiet thrust. Unlike front‑hub designs, rear placement puts weight over the drive wheel for superior traction on damp pavement and loose gravel. Top assisted speed: 20 mph (32 km/h) — optimized for urban flow, not racetrack extremes.

Instant throttle response
Sinusoidal controller = near‑silent hum

Intelligent Energy Management

The 48V 14Ah lithium‑ion pack uses 21700 cells for higher energy density and longer cycle life. The smart BMS protects against overcharge, deep discharge, and temperature extremes, extending the pack's lifespan.

ChemistryLithium-ion 21700 cells
Voltage48V
Capacity14Ah (672 Wh)
Range19 – 37 mi (31 – 60 km)*
Charge Time~3.2 hours (0‑100%)
Life Cycles800+ to 80% capacity

*Range varies based on rider weight, terrain, assist level, and weather conditions. PAS level 1–2 yields the highest mileage.

Smart Cockpit, Total Control

LCD Display

Sunlight‑readable monochrome panel shows speed, battery %, assist level, and odometer at a glance. Backlit for night riding.

Half Twist Throttle

Progressive throttle on the right grip — simply twist to accelerate without pedaling. Intuitive control for stop‑and‑go traffic.

The Pedal Assist System (PAS) uses a 12‑magnet cadence sensor for smooth, lag‑free engagement. Five assist levels let you dial in the exact effort you want to contribute.

Stability Meets Comfort

26‑inch wheels wrapped in 3.0‑inch wide tires strike the perfect balance between low rolling resistance and plush cushioning. The volume absorbs road chatter, while the rounded profile maintains confident cornering on pavement and hardpack paths.

26" × 3.0" all‑terrain tires
Double‑wall alloy rims
Puncture‑resistant casing

6061 Aluminum Frame

Hydroformed 6061 alloy tubes deliver an ideal stiffness‑to‑weight ratio. The frame is corrosion‑resistant and designed with a low step‑through option for effortless mounting. Internal cable routing keeps lines clean and protected from the elements.

Material
6061 Aluminum Alloy
Weld
Smooth TIG, post‑weld heat treated
Fork
Suspension fork, 60mm travel

Frequently Asked Questions

On a flat road with a 170 lb rider, throttle‑only reaches approximately 20 mph (32 km/h). Pedal assist can maintain that speed with less battery consumption.

The electrical components are rated IPX5 water‑resistant. Riding in light to moderate rain is fine, but avoid submerging the motor or battery. Dry connections after heavy exposure.

Store the battery at 40–70% charge in cool temperatures. Avoid deep discharges below 10% regularly. The BMS prevents overcharging, so you can leave the charger connected overnight occasionally.

Yes, the half twist throttle works independently from PAS. You can ride throttle‑only up to the max speed, or combine with pedal assist for extended range.

Purchase with Confidence

Free Shipping On all orders — no minimums, no surprises.
180-Day Protection Covers manufacturing defects — ride worry‑free.
30-Day Money‑Back Not satisfied? Return within 30 days for a full refund.
24-Month Warranty Frame, motor, and battery coverage you can count on.

*Policy applies to original purchaser. See full terms for details.

Crafted for the city. Tuned for life.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 62003060257

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4.2 ★★★★★
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Product Reviews
J
Verified Purchase
John Hemphill
Lowell, US
★★★★★ 4
Foes at the Top Table
Format: Kindle
Those of us who studied economics in the 60s grew up on Keynes. This book provides a fascinating picture of the great man in action. And an equally fascinating picture of the Lend Lease negotiations and then the US hard line at Bretton Woods. Behind this hard line was Harry Woods, of Lithuanian emigre stock, who clawed his way by hard work and intelligence to negotiating prominence in the US Treasury. And who was a Soviet agent of influence. Well written, lucid, and remarkably interesting.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2013
M
Verified Purchase
Manuel Hinds
Houston, US
★★★★★ 5
A distant mirror of our current problems
Format: Hardcover
The title of this excellent book accurately describes its contents:it is about a battle fought to define a new world order, that which was emerging from the ashes of World War II. The book also conveys the messy complexity of such a historical process--how individual characters interpreted the events around them, realized that they were giving shape to a radically new future, tried to take advantage of them to advance their own personal and national interests, and succeeded in accordance with their intelligence, the cunning of their argumentation, and, above all, the shifts in the real power that supported them. Masterly, Benn Steil makes the reader feel how Keynes and White gradually reached an unspoken and unrecognized agreement regarding the shape that the new world would have, and then fought to gain advantage in that new world--Keynes trying to keep the British Empire paramount in the world order, now based not on the Royal Navy but on Britain's alliance with the United States, the emerging superpower, and White asserting the unimpeded power of the United States. Focusing on one crucial aspect of the new order, money, Steil is able to reenact the human drama of the transfer of world power from Britain to the United States in all orders of life. It is an excellent history book. The book, however, goes beyond history as the narration and understanding of past events. When reading it, there is an eerie feeling that you are reading about current events. The process that led to Bretton Woods started thirty years before, with World War I and the end of the classical gold standard. When the war ended, a new monetary system was created, which was called the gold exchange standard. It resembled but emasculated the power of the old gold standard to keep monetary order in the world at large. This new system gave central banks the power to create money independently of the international consequences of doing it. With time, central banks abused this power, created a boom in the 1920s and then a depression in the 1930s. Bretton Woods was convened to reintroduce order in the monetary world. Like the gold standard of old, the new system created there was tied to gold in an effort to ensure stability. Yet, it also allowed central banks freedom to create money under certain circumstances. As it happened in the 1920s and 1930s, central banks abused their power, blew up the international system (in this case the Bretton Woods system) and then led the world into a series of booms and busts that has not ended as yet. A new monetary order will be needed to avoid worldwide inflation and protracted recessions. To understand the issues that will be crucial to give shape to this new monetary order it will be necessary to revisit the making of Bretton Woods in detail. There is no better way to understand these issues that Ben Steil's The Battle of Bretton Woods. Thus, in addition to being an excellent history book, it is also an excellent book about current events. Full disclosure: I wrote a previous book with Benn Steil: Money, Markets and Sovereignty (Yale University Press, 2009).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2013
D
Verified Purchase
djwatkins487
Fort Morgan, US
★★★★★ 5
The Battle of Bretton Woods
Format: Hardcover
From the growing reliance upon international finance and the devastating repercussions of two World Wars, Steil weaves together an important narrative that tells the story of America's rise to the world stage as a major power. Britain's reign of dominance comes to an abrupt end under the weight of the Second World War and the dependence of their territories. Reliance on foreign aid and mounting debt put Britain in a precarious situation for which the United States capitalized on to secure its place as the dominant world power. Through the ideas and experiences of two brilliant economists, Harry White and John Keynes, were guided through the creation and implementation of an economic solution to remedy, and further amalgamate the global financial framework. At Bretton Woods, White and Keynes promote slightly different plans that form the International Monetary Fund and World Bank; organizations designed to monitor, stabilize, and assist international finance. To Britain, and much of the world's chagrin, the organizations are formed in a manner that benefited the United States post-World War Two position as a creditor nation. Dollar dominance in the newly designed financial markets promotes short-term growth for the United States. However, financial mismanagement and over-extension soon lead the U.S. down a path of monetary hardship that ultimately results in our current situation as debtor nations (much like Britain was when the story began). The author ends the narrative by chronicling the effects of Bretton Woods on the United States, Britain, and international finance from the mid-twentieth century to the present. This book tells the remarkable story of America's rise to power through a financial lens. Steil is a wonderful writer who describes complex ideas of monetary policy, international economics, and currency manipulation in such a manner that is easy to understand and leaves the reader wanting more.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 16, 2013
A
Verified Purchase
Alfred H.
Waukegan, US
★★★★★ 5
A concise, readable history of European developments prior to W.W. i.
Format: Paperback
This is part of a 4 volume series on (primarily) European history covering the development of the French and Industrial revolution(s) with particular emphasis on the Belle Epoque that marked the end of nearly 100 years of peace among the European Powers. It covers a variety of topics ranging from the emergence of the working classes; the role of the middle class; industrial capitalism; nationalism; the sciences and the arts; and, even a chapter on the "New Woman". Quite encompassing in its treatment and its analysis of the a period that serves as a background to the twentieth century.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 3, 2018
J
Verified Purchase
Juan Manuel Wills
Boise, US
★★★★★ 5
Un comentario
Format: Paperback
El mundo burgués generó desarrollos muy importantes para los habitantes de Europa Occidental particularmente; incrementó de manera importante los niveles de vida de una porción significativa de la sociedad, introdujo innovaciones claras en las ciencias, en lo educativo, en el comercio global y en el intercambio entre diferentes culturas. Mejoró la productividad, las comunicaciones, la alimentación......Pero también incorporó consigo tendencias negativas y difíciles que cambiaron para siempre la interrelación entre pares al crearse una diferencia significativa de clases, la alta, burguesa y la trabajadora y proletaria, continuó la discriminación sobre la campesina, estableció el concepto forzado de nacionalismo, transformó a los países mas desarrollados en imperios con ansias de crecimiento y de dominio de los menos preparados, se evidenció la explotación del tercer mundo, se inició el armamentismo y la instigación a la guerra que culminó con la desastrosa confrontación de 1914. El mundo, a partir de ese momento no volverá a ser igual. Todos estos conceptos, esta historia, están amenamente descritos por el autor, con un gran conocimiento de la época y con una inteligente asociación de los acontecimientos para hacer entender al lector sus grandes transformaciones e implicaciones. Como los otros tres libros de la serie, lo recomiendo ampliamente. Permite entender todo la evolución de nuestra civilización en los dos últimos siglos así como la influencia generada por los grandes imperios de la época y sus pensadores
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 28, 2011

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