Trusted by elite BMX racers for more than a decade, the Promax HF-2 cranks are a balanced combination of stiffness, durability and weight savings. Forged from 6061-T6 aluminum, the hollow crank arms spin on a beefy 24mm spindle permanently fitted into the drive-side arm.Hollow-forged 6061-T6 aluminum, HF-2 cranks are lightweight, stiff and strong. 104mm BCD chainring mount (Chainring sold separately). Chainline: 43. Q-Factor: 168. Pedal washers included. Bottom bracket sold separately. Will not fit English x 73mm bottom bracket shells. Item Specifications: Drive Side Compatibility, Right Hand Drive, Chainring BCD, 104, Chainrings Included, No, Color, Black, Crankset Style, 2-Piece, Crank Length (mm), 170, Crank Intended Use, BMX, Weight, 791, Pedal Spindle, 9/16", BB Included, No, Crank

Promax HF-2 BMX Crankset 170mm Hollow Forged Aluminum, 24mm Steel Spindle

Reference Number: 3MV7IN

Upgrade your BMX performance with the Promax HF-2 Crankset - the ultimate choice for riders seeking strength, lightweight design, and premium engineering. Crafted from robust 6061-T6 aluminum, these hollow-forged crank arms deliver exceptional stiffness and durability while minimizing weight for optimal acceleration and agility. Designed for elite BMX racers and serious enthusiasts, the HF-2 features a 2-piece construction with a 24mm steel spindle directly integrated into the drive-side arm, ensuring a secure and responsive power transfer.

Materials & Construction:

Constructed from high-grade 6061-T6 aluminum, the Promax HF-2 crankset offers a perfect balance of strength and lightweight performance. The hollow-forged arms are expertly engineered for maximum stiffness and durability, capable of withstanding aggressive riding styles and intense BMX jumps. The steel spindle, 24mm in diameter, provides enhanced ride stability and longevity, ensuring consistent performance ride after ride.

Performance & Engineering:

Engineered for precision and efficiency, the HF-2's 104mm BCD allows for versatile chainring compatibility (sold separately), enabling customizable gearing setups for various BMX disciplines. Its optimized chainline of 43mm and Q-factor of 168mm promote a natural pedaling stance, reducing fatigue during extended rides or competitions. The crankset is designed for right-hand drive BMX setups, providing reliable power delivery and control.

Components & Technology:

Featuring a 9/16" pedal spindle compatibility, the Promax HF-2 accommodates a wide range of BMX pedals for personalized riding styles. Pedal washers are included to ensure proper fitment and smooth operation. Note that the bottom bracket and chainrings are sold separately, allowing you to tailor the setup to your riding preferences.

Style & Use Case:

With sleek black anodized finishing, the HF-2 crankset combines performance with a sharp, minimalist aesthetic. Its durable construction makes it ideal for BMX racing, stunt riding, dirt jumping, and freestyle BMX - anywhere reliability and lightweight performance are paramount. The two-piece design facilitates easy maintenance and replacement, keeping you riding at peak performance.

Innovative Features & Differentiators:

The Promax HF-2's hollow-forged construction and integrated steel spindle are notable for their strength-to-weight ratio, making it a top choice among BMX professionals. Its compatibility with a 104mm BCD chainring mount provides flexibility for custom gear ratios, while precision engineering ensures smooth, responsive pedaling. Whether for competition or recreational riding, the HF-2 crankset offers unmatched reliability and performance innovation.

Optimize Your BMX Setup Today:

Elevate your BMX riding experience with the Promax HF-2 Crankset - engineered for racers and enthusiasts who demand the best in strength, weight savings, and precision engineering. Perfect for aggressive BMX tracks, freestyle parks, or dirt jumps, this crankset is your reliable partner for high-performance cycling.

  • Durable 6061-T6 aluminum construction offers an optimal balance of stiffness, strength, and lightweight performance for aggressive BMX riding and racing.
  • Designed with a hollow-forged, 2-piece construction, the Promax HF-2 crankset delivers superior power transfer and enhanced durability in a sleek black finish for a professional look.
  • Features a 24mm steel spindle and right-hand drive compatibility, ensuring reliable performance and smooth pedal engagement on high-impact BMX maneuvers.
  • With a 104mm BCD chainring mounting interface (sold separately), this crankset is versatile for customizing gear ratios and optimizing pedaling efficiency for various BMX tracks and freestyle setups.
  • Innovative engineering includes a reinforced drive-side arm and pedal washers included for quick installation, making it an ideal upgrade for BMX enthusiasts seeking race-ready performance and style.
Item Specifications
Drive Side CompatibilityRight Hand Drive
Chainring BCD104
Chainrings IncludedNo
ColorBlack
Crankset Style2-Piece
Crank Length (mm)170
Crank Intended UseBMX
Weight791
Pedal Spindle9/16"
BB IncludedNo
Crank Arm MaterialAluminum
Weight (oz)27.9
Spindle MaterialSteel
Defined ColorBlack
Bore24mm

Why 365 Cycles?

365 Cycles is an Authorized Promax Dealer, and we offer the Full Promax Warranty!

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Most orders placed during the workweek before 1:30 pm EST ship the same day, but in rare cases (peak season/holiday periods) handling time can take up to 48 hours. If you have questions regarding shipping estimates, please let us know prior to placing your order. There is a direct signature requirement for all orders over $500.

Please allow 1-2 business days for your order tracking to update.

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Combined Shipping Discounts

To offer customers savings on shipping, we offer discounts when shipping multiple items from our store. We cannot issue refunds on shipping once an order is finalized so please follow the 5 steps below and ask if you are having trouble with the discount before you make a purchase.

  1. Be sure you are using the US site: https://www.ebay.com
  2. Select Add to Cart (instead of Buy It Now) with items from our store 365Cycles
  3. Click on Proceed to Checkout. On the checkout page, the shipping service on each line item needs to match
  4. Compare First Class vs Priority as sometimes Priority can be cheaper and it gets to you faster!
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Returns

365 Cycles offers returns for 30 days on new items in their original, intact packaging. Return shipping for ALL orders are to be paid by the buyer. Please be sure to read our return policy entirely and if you have any questions, please contact Customer Service.

Full refunds are issued on items that are brand new and we are able to resell as new. 365 Cycles reserves the right to deny returns that are outside of policy including, but not limited to, used items, items missing original packaging, items with damaged manufacturer packaging, or international orders. Return orders must be shipped in a box or bubble mailer. Items shipped without an outer box will incur a restocking fee. You will be contacted through eBay if your return is ineligible for a full refund.

Returns must be initiated within 30 days from purchase date through your Purchase History under My eBay.

If we make an error in shipping, please contact us -- we will ship out the correct item and provide a free prepaid return label as quickly as possible!

Exchanges

If you need to exchange your order, the fastest and easiest way to do this is to reorder. We will ship your new order immediately and, in the meantime, please initiate a return through eBay on the original item and return it. We will refund for the returned item once it is received back.



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Company Details

365 Cycles
1180 Enterprise Rd
East Petersburg, PA 17520
United States

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