Haro Bikes Group One Quill Stem vs. KHE Bikes Zoom Quill Stem vs. KHE Bikes Prism Quill Stem - Direct Comparison
3 BMX Stems compared side by side: Haro Bikes Group One Quill Stem, KHE Bikes Zoom Quill Stem and KHE Bikes Prism Quill Stem. The lowest price is KHE Bikes Prism Quill Stem at 10.95 EUR. Haro Bikes Group One Quill Stem meets this category’s quality standard.
Key Differences

Why buy Haro Bikes "Group One" Quill Stem - 1 Inch?
- ✓ Meets 3 of 3 quality markers: 6061-T6 aluminium, forged, CrMo
- ✓ Best value: meets the quality standard at the best price in this comparison
- ✓ Most CrMo parts (2)
- ✓ Pro quality

Why buy KHE Bikes "Prism" Quill Stem - 1 Inch?
- ✓ Lightest (0.52 kg)
- ✓ Best price (10.95 EUR)
Conclusion
- Haro Bikes "Group One" Quill Stem - 1 Inch excels in: quality markers, value for money and material quality
- KHE Bikes "Zoom" Quill Stem - 1 Inch excels in: weight
- KHE Bikes "Prism" Quill Stem - 1 Inch excels in: price and weight
Technical Specifications
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| Product | Haro Bikes "Group One" Quill Stem - 1 Inch | KHE Bikes "Zoom" Quill Stem - 1 Inch | KHE Bikes "Prism" Quill Stem - 1 Inch |
| Price |
71.95 EUR Taxfree excl. shipping |
13.95 EUR Taxfree excl. shipping |
10.95 EUR 🏆 Taxfree excl. shipping |
| Manufacturer | Haro Bikes | KHE Bikes | KHE Bikes |
| Weight Scale: light to heavy (BMX Stems category) | 0.56 kg | 0.52 kg 🏆 | 0.52 kg 🏆 |
| Variants & availability |
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| Quality markers | 3/3 Quality | 0/3 | 0/3 |
| Material | ✓ 6061-T6 aluminium | not stated | not stated |
| Manufacturing | ✓ forged | not stated | not stated |
| Bolts | ✓ CrMo | not stated | not stated |
| Specifications | |||
| Stem-Type | 1" shafted Stem | Quill Stem | Quill Stem |
| Stem-Style | Topload | Topload | Topload |
| Stem-Material | 6061-T6 Aluminum (body), 4130 CrMo (shaft, 110mm) | - | - |
| Manufacturing-Method | forged | - | - |
| Reach | 50mm | 40mm | 50mm |
| Bar-Clamp | 22.2mm | 22.2mm | 22.2mm |
| Fork-Clamp Diameter | 1" (25.4mm) | 1" (25.4mm) | 1" (25.4mm) |
| Recommended for | Street, Park, Trails | Street, Park | Street, Park |
| Bolts | CrMo, M8 (1.25mm), 6mm Allen key, 17mm wrench | - | - |
| Stem | - | 7005 aluminum | 7005 aluminum, black anodized |
| Quill | - | HiTen steel | chromed steel |
| Extras | - |
22.2mm cone bolt without a hole, so no cable routing |
21.1mm quill diameter cone bolt with a hole, a brake cable can be routed through infinitely height adjustable |
| Buy now View product | Buy now View product | Buy now View product | |
What makes a good BMX stem?
A good BMX stem is machined from 6061-T6 aluminium; 7075 is the noticeably stronger alloy and therefore the high-end choice. CNC-machined stems hold tolerances better than die-cast ones and keep their clamping force - forged is strong too. The bolts should be CrMo, because they hold bar and steerer under full load. Frontloader or topload is not a quality question but one of bar height and riding style. More on this in the category FAQ
The Brands
About Haro Bikes: Haro Bikes is BMX Freestyle. Founded in 1978 by icon Bob Haro in California, the brand not only significantly co-shaped the sport itself but also... View all Haro Bikes products
About KHE Bikes: As one of the oldest and biggest BMX companies in Germany, KHE Bikes has been a flagship of the German scene since 1988. Founded by Thomas and... View all KHE Bikes products
kunstform Picks from the BMX Stems category
Our history with BMX parts did not start when we opened kunstform in 2003: some of the team have been riding longer than the shop has existed, and most of us are still on a bike today. So we know pretty well which parts we can trust. A kunstform Pick therefore only goes to what we would bolt onto our own bikes: parts where the quality and the value are right, and that you will enjoy for a long time.
Lightest and heaviest: BMX Stems
Weights range from 0.19 kg to 0.56 kg - 0.31 kg on average, 0.31 kg in the middle of the field. The chart shows all 131 comparable products in this category; the markers are the ones being compared.
- 1 Haro Bikes Group One Quill Stem
- 2 KHE Bikes Zoom Quill Stem
- 3 KHE Bikes Prism Quill Stem
Lightest
Heaviest
Cheapest and most expensive: BMX Stems
Prices range from 10.95 EUR to 142.95 EUR - 61.61 EUR on average, 66.95 EUR in the middle of the field. The chart shows all 131 comparable products in this category; the markers are the ones being compared.
- 1 Haro Bikes Group One Quill Stem
- 2 KHE Bikes Zoom Quill Stem
- 3 KHE Bikes Prism Quill Stem

























