1. ATV/Side-by-Side/UTV Parts & Accessories On Sale
  2. sku: 9459144851578502
  3. PROMAX ST21-00BA8945-BK

PROMAX ST21-00BA8945-BK Top Impact Mini Bmx Stem 4711103652398 45MM

St21-00ba8945-bk Promax Impact Mini Bmx Stem - 45mm Top Load Black

( Brand: Promax ), ( Part Type: Impact ), ( Manufacturer Part Number: ST21-00BA8945-BK ), ( Bar Clamp Diameter: Mm ), ( Color: Black ), ( Stack Height: 30.5 ), ( Stem Type: Top Load ), ( Alt Mpn 1: Sm0683 ), ( Category 1: Bike / Ebike Stems ), ( Category 2: New Parts ), ( Average Delivery Time: 2-3 Days ), ( Package Weight: 0.3500 ), ( Package Length: 5.03 ), ( Package Width: 2.15 ), ( Package Height: 2.03 ), ( Warranty: 30 Days ), ( UPC: 711103652398 )

Review PROMAX Impact Mini Bmx Stem 45mm Top Load Black

Introducing the PROMAX St21-00BA8945-BK Impact Minis BMX Stem, a high-performance and stylish addition to your BMX bike. This stem is designed with a 45mm top length, making it a popular choice among BMX riders for its versatility and balance between strength and agility.

The Impact Minis stem is engineered using PROMAX's proprietary Impact Technology, which combines a lightweight and durable design with enhanced vibration absorption. This technology ensures that your bike feels smoother and more responsive, even during the most intense rides.

The stem's body is crafted from 6061 T6 aluminum, providing a solid foundation for your handlebars while keeping the weight to a minimum. The stem's clamping area is generously sized, ensuring a secure and reliable grip on your handlebars, even during aggressive maneuvers.

The stem features a black anodized finish, which not only looks great but also provides an additional layer of protection against corrosion and wear. The stem is compatible with BMX handlebars with a 1-1/8" diameter.

The PROMAX St21-00BA8945-BK Impact Minis BMX Stem is a must-have for any BMX rider looking for a high-performance, durable, and stylish stem to complete their build. Whether you're hitting the skate park or ripping through the streets, this stem will provide the strength and agility you need to take your riding to the next level.

Pros and Cons of buying a Promax ST21-00BA8945-BK Impact Mini BMX Stem (45mm Top)

1. **Pros**:

* **Durable Design**: The Promax Impact Mini BMX Stem is known for its robust and durable construction. It is made of 6061-T6 aluminum alloy which makes it sturdy and lightweight.

* **Adjustable Height**: The stem comes with a height adjustment feature, allowing riders to customize their handlebar position for optimal comfort and control. The height ranges from 45mm to 60mm.

* **Integrated Headset**: The integrated headset design of this stem ensures a secure and rigid connection between the handlebars and the fork, providing better handling and responsiveness.

* **Affordable**: Compared to other stems in the market, the Promax Impact Mini BMX Stem is quite affordable, making it an excellent option for budget-conscious riders.

2. **Cons**:

* **Limited Color Options**: The stem is only available in black color which might not suit everyone's preference.

* **Not Compatible with All BMX Bikes**: The 45mm top size may not be suitable for all BMX bikes, so riders should check their bike specifications before making a purchase.

* **Installation Requires Tools**: Installing the stem requires some tools, which might be an inconvenience for some riders.

Conclusion:

The Promax Impact Mini BMX Stem (45mm Top) is a durable, adjustable, and affordable stem option for BMX riders. Its robust design, integrated headset, and height adjustment feature make it a great choice for those looking for a reliable and customizable stem. However, its limited color options, compatibility with only specific BMX bikes, and the requirement for tools during installation are potential drawbacks.

Recommendation:

If you are a BMX rider in search of a durable and customizable stem that offers good value for money, the Promax Impact Mini BMX Stem (45mm Top) could be an excellent choice for you. However, ensure that your BMX bike is compatible with this stem before making a purchase. Additionally, if you prefer a wider range of color options, you might want to consider other stem models from different manufacturers.

part # st2100ba8945 prices

  • $44.99-$50.00

specifications utvyank:

  • brand: Promax
  • part type: Impact
  • manufacturer part number: ST21-00BA8945-BK
  • bar clamp diameter: Mm
  • color: Black
  • stack height: 30.5
  • stem type: Top Load
  • alt mpn 1: Sm0683
  • category 1: Bike / Ebike Stems
  • category 2: New Parts
  • average delivery time: 2-3 Days
  • package weight: 0.3500
  • package length: 5.03
  • package width: 2.15
  • package height: 2.03
  • warranty: 30 Days
  • upc: 711103652398

general utvyank:

  • condition: New
  • Parts Accessories > ATV, Side-by-Side UTV Parts Accessories > Other ATV, Side-by-Side UTV Parts Accessories

shipping utvyank:

  • cost: $0.00
  • transit: 4-8 Days
  • carrier: USPS, FedEx
  • type: Calculated
  • service: USPS Ground Advantage, FedEx 2Day, FedEx Standard Overnight
  • class: Standard, Expedited, One-day

payments utvyank:

  • credit card: Diners-club
  • wallet: Apple-pay
  • other

offer utvyank:

  • sold: 0
  • started: November 26, 2025
  • options: Ship-to-home
  • availability: In Stock

returns utvyank:

  • policy: Returns Accepted
  • paid by: Seller
  • time: 30 Days

seller utvyank:

  • rating: 99.4%
  • # reviews: 493954
part type: impact, bar clamp diameter: mm, stack height: 30.5, stem type: top load, alt mpn 1: sm0683, category 1: bike / ebike stems, category 2: new parts, average delivery time: 2-3 days, package weight: 0.3500, package length: 5.03, package width: 2.15, package height: 2.03, warranty: 30 days,
category: atv parts > atv, side-by-side utv parts accessories, color: black, sku: 9459144851578502,

Promax ST21-00BA8945 Is Similar To:

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5 offers $44.99–$50.00 USD
  • Offer #1: $49.36 price + free delivery = $49.36* total. PART TYPEOther. Promax Impact Mini Stem is cold-forged and CNC machined from 6061-T6 aluminum alloy.FREE SHIPPING
  • Offer #2: $44.99 price + free delivery = $44.99* total.FREE SHIPPING
  • Offer #3: $50.00 price + free delivery = $50.00* total. Item Specifications: Bar Clamp Diameter (mm), 22.2, Color, Black, Defined Color, Black, Length, 45, Reach, 45, Rise, 5, Stack Height, 30.5, Steerer Clamp Diameter, 1", Stem Angle (deg), 0, Stem Type, Top Load,. Promax Impact Mini Stem is cold-forged and CNC machined from 6061-T6 aluminum alloy.Fits 1" steerer tubes.FREE SHIPPING
  • Offer #4: $50.00 price + free delivery = $50.00* total. MfrPartNo: -BK. Color: Black.FREE SHIPPING
  • Offer #5: $50.00 price + free delivery = $50.00* total. Fits 1" steerer tubes Product Specifics Bar Clamp Diameter (mm): 22.2 Color: Black Defined Color: Black Length: 45 Reach: 45 Rise: 5 Stack Height: 30.5 Steerer Clamp Diameter: 1" Stem Angle (deg): 0 Stem Type: Top Load.FREE SHIPPING