CINELLI 399406 Pantograph Rosa Panto Quill Stem Road Racing Bike

( Brand: Cinelli ), ( Manufacturer Part Number: 399406 ), ( Part Type: Stem Bike ), ( Color: Silver ), ( Compatible Bike Type: Road Bike, Racing Bike ), ( Stem Type: Quill ), ( Material: Aluminum ), ( Set Includes: Stem ), ( Steerer Tube Diameter: 1 In )

Review CINELLI Pantograph De Rosa Panto Quill Stem Silver Aluminum Inch Road Racing Bike

The **Cinelli 399406 Pantograph Rosa Panto Quill Stem** is a meticulously engineered racing stem designed for cyclists who demand both performance and precision in their cornering and handling. Crafted from high-quality aluminum, this stem features Cinelli s signature **Pantograph** technology, a revolutionary pivot system that dynamically adjusts the handlebar position during aggressive turns, reducing drag and enhancing aerodynamics while maintaining stability. The **Rosa** variant, with its sleek black and rose gold accents, offers a striking aesthetic that complements modern road racing bikes, blending sporty elegance with cutting-edge functionality. The **Panto Quill** design allows for a seamless, low-profile connection to the fork, eliminating the need for a traditional stem clamp and instead integrating directly into the fork s quill, which not only reduces weight but also enhances rigidity and power transfer. With a **31.8mm** drop and a **100mm** length, this stem is tailored for aggressive riders who favor a compact, aggressive riding position, ideal for high-speed descents and aggressive cornering. The **quill stem** mechanism ensures easy installation and removal, making it a practical choice for riders who frequently switch between different handlebar setups or need quick adjustments on the go. Whether paired with aero bars for time trials or flat bars for aggressive road racing, the **Cinelli 399406 Pantograph Rosa Panto Quill Stem** delivers a perfect balance of aerodynamics, responsiveness, and style, making it a standout choice for competitive cyclists who refuse to compromise on performance.

### **Pros and Cons of buying a Cinelli 399406 Pantograph Rosa Panto Quill Stem for a Road Racing Bike**

1. **High-Quality Materials and Craftsmanship** Cinelli is known for premium Italian manufacturing, and this stem is made with durable materials, including a carbon fiber construction that balances strength and weight. The quill design ensures a secure fit on most drop bar setups.

2. **Ergonomic and Adjustable Design** The Pantograph Rosa stem features a curved profile that promotes a more natural hand position, reducing strain during long rides. The adjustable quill allows for fine-tuning of reach and angle, which can improve comfort and aerodynamics.

3. **Lightweight Construction** Carbon fiber stems are significantly lighter than aluminum or steel alternatives, contributing to an overall more responsive and efficient bike setup. This is particularly beneficial for racers or serious cyclists who prioritize weight savings.

4. **Compatibility with Drop Bars** The quill design is compatible with most standard drop bar road bikes, making it a versatile choice for riders who may switch between different bikes or handlebars.

5. **Aesthetic Appeal** Cinelli is a brand associated with high-end, stylish components, and this stem s design complements a premium road racing bike aesthetic. The Rosa colorway adds a touch of elegance for riders who value appearance as well as performance.

6. **Durability** Carbon fiber stems are resistant to corrosion and fatigue, making them a long-lasting investment compared to metal stems, which may require replacement over time due to wear or bending.

7. **Performance Benefits** The ergonomic shape can reduce hand numbness and improve aerodynamics, which may translate to better speed and endurance in races or long rides.

---

1. **High Cost** Cinelli components are premium-priced, and this stem is no exception. For riders on a tight budget, the cost may be prohibitive, especially if they are not yet committed to a high-end setup.

2. **Limited Adjustability Compared to Ahead-Sets** While the quill allows for some adjustment, it does not offer the same level of fine-tuning as an Ahead-set stem, which can be rotated and adjusted in multiple planes. This may limit customization for riders who need precise ergonomic adjustments.

3. **Potential Overkill for Recreational Riders** If you are not a competitive racer or a serious time-trialist, the performance benefits of this stem may not justify the cost. For casual riders, a more affordable stem from brands like Ergon, Bontrager, or even some budget carbon stems may suffice.

4. **Compatibility Issues with Non-Standard Setups** While the quill design is common, some older or highly customized bikes may have non-standard drop bar spacings or quill lengths. Ensuring compatibility with your specific bike s handlebar setup is essential to avoid fit issues.

5. **Maintenance Sensitivity** Carbon fiber stems can be sensitive to impacts or rough handling. Dropping the bike or subjecting the stem to excessive force could potentially damage the carbon construction, whereas metal stems might bend and still function.

6. **Limited Availability and Lead Times** High-end components like this may not always be in stock, and ordering could require patience due to production or shipping delays.

7. **Weight vs. Cost Trade-Off** While the stem is lightweight, the cost-to-weight ratio may not be as favorable as some mid-range carbon stems from other brands. For example, a slightly heavier but more affordable stem might offer similar ergonomic benefits at a lower price.

---

The **Cinelli 399406 Pantograph Rosa Panto Quill Stem** is an excellent choice for riders who prioritize **ergonomics, aesthetics, and high-quality craftsmanship** in their road racing setup. Its carbon fiber construction, adjustable design, and compatibility with drop bars make it a strong option for competitive cyclists or enthusiasts who want a premium feel. However, the **high cost** and **limited adjustability** compared to Ahead-sets may not be justified for recreational riders or those on a budget.

If you are a **serious racer, time-trialist, or someone who values the finest components**, this stem is a worthy investment. For **casual riders or those seeking better value**, exploring alternatives from brands like Ergon, Bontrager, or even some entry-level carbon stems (e.g., from FSA or Hope) could provide a more balanced cost-performance ratio.

---

- **Buy it if:** You are a competitive cyclist, prioritize ergonomics and aesthetics, and have the budget for a premium component. The stem s design will enhance comfort and potentially improve your riding efficiency.

- **Consider alternatives if:** You are a recreational rider, on a budget, or need more adjustability. Look for mid-range carbon stems with Ahead-set compatibility (e.g., Ergon DNA, Bontrager XR3) or high-end stems from brands like **FSA, Hope, or Look** that offer similar performance at a lower cost.

- **Test fit first:** If possible, try the stem on your bike to ensure it meets your ergonomic needs before committing, as hand position preferences vary widely among riders.

Details:

/ Cinelli De Rosa Panto Quill Stem Silver Aluminum 1 Road Racing Bike For parts. I don't have a De Rosa so want to bother with it. Has a bar stuck in it that looks like was swan off. Sold cheap BC it looks like an annoying project.

Sold as a project.

part #: 399406 prices

• $84.97-$200.00

specifications ribicycl:

• brand: Cinelli
• mpn: 399406
• part type: Stem Bike
• color: Silver
• compatible bike type: Road Bike, Racing Bike
• stem type: Quill
• material: Aluminum
• set includes: Stem
• steerer tube diameter: 1 In

offer ribicycl:

• started: March 24, 2026
• sold: 0
• availability: In Stock
• options: Ship-to-home
• quantity: 1

shipping ribicycl:

• service: USPS Ground Advantage
• cost: $8.10
• class: Standard
• type: Calculated
• carrier: USPS
• transit: 4-8 Days

returns ribicycl:

• policy: No Returns

general ribicycl:

• condition: For parts or not working
• Cycling > Bicycle Components Parts > Stems

payments ribicycl:

• credit card: Visa
• other
• wallet: Google-pay

seller ribicycl:

• city: Washington, District Of Columbia
• # reviews: 869
• rating: 100.0%

Cinelli 399406 Is Similar To:

• Am3vxn110 Cinelli Stem Thdls Blk Via 8058774821811 (25.7% similar) 8 balk Cinelli via manufacturer part number AM3VXN110 brand name product model stem thuds 110MM 6d 31. Orders usually ship the same day are placed or following. 8 balk Cinelli via stem thuds 110MM 6d 31. 8 balk Cinelli via stem thuds 110MM 6d 31. Pages stem thuds 110MM 6d 31. 8 balk Cinelli via item...(November 3rd, 2018)
• Amn1a110 Cinelli Vintage Quill Stem Degree Silver Old Logo Make An (48.7% similar) Inserted once many years, ago but never put into actual use. I'll cap shipping at I don't need it someone, make a reasonable offer. Look at the photos, it mostly just needs a little cleaning. It would be a nice piece for vintage bicycle restoration project. Its been laying in a box for thirty-odd ...(June 9th, 2018)
• Cu4msn40 Cinelli Mash Road Bicycle Handlebar Black Ano 8058774822665 (25.3% similar) Orders usually ship the same day are placed or following. 8/4 0CM black Arno weight approximate...(September 25th, 2018)
• Cucrt42 Cinelli Criterium Alloy Road (34.9% similar) Mountain time ship same day. For any other reason: you can return the product reason, as long it is in original condition when was purchased, with packaging. Cinelli criterion drop handlebars 6061-T6 aluminum color: silver bar drop: 145MM width : 42CM clamp diameter: 26. You see, we love to ride ...(November 18th, 2017)
• Curmg34212 Cinelli Ram Carbon Combo Cm Stem 8058774823440 (28.6% similar) For the last two years he has been working on an ongoing collaboration with Cinelli which included catalogue cover art, posters, handlebar tape and ram mike giant edition, a limited edition of legendary first even integrated carbon fibre stem...(September 3rd, 2018)
• Cinelli Road Bike Seat Milano Unicanitor Brevettata Made In Italy (21.9% similar) ...(January 1st, 2021)
• Cinelli Ram3 Integrated Carbon Bars 420mm Bar 42 Cm 120mm Stem With Mantra Deck (34.1% similar) This one does have the mantra deck to hold your computer. The bottom of the drops are 44CM. The top of the bar is a 42CM measured edge. This is a used set of bars so it does show some signs wear, but nothing that going to affect their performance. This nice set of Cinelli ram 3 integrated bars could...(August 12th, 2024)
• Cinelli 65-40 Vintage 1980s Criterium Drop Road Handlebars 65-44 Cm 26.4 Pista Track (28.6% similar) 26.4 stem clamp size. A nice example of old school Cinelli criterion handlebars for the road or track. If so, i'll provide it at a favorable price...(September 12th, 2024)
• Cinelli Cu0bsb Boss Alloy Handlebar 31.8 Road fixie Drop Bar Black 40 42 44 Cm (31% similar) Lightly used...(March 7th, 2025)
• Cinelli Ampt31080 Pista Alloy Stem Black 31.8 X 80mm Track Fixed Gear Mash Bike (37.9% similar) With a sleek design and durable construction, this 80MM stem features 31.8MM diameter, perfect for smooth precise handling. Made by the trusted brand Cinelli, this stem is a must-have for riders looking to enhance their performance on track. The Cinelli Pisa alloy stem in black is a high-quality ...(May 28th, 2025)
• Cinelli 058774822047 Vintage 1a 22.2 Mm Quill Stem Alloy 26mm Clamp 100mm (44.2% similar) Vintage Cinelli quill stem in good working order, 100MM reach, 22.2...(July 17th, 2025)