As an ultra cyclist who’s spent countless hours battling wind, rain, and exhaustion across grueling 300 to 500 kilometer races, I’ve learned that reliable gear is non-negotiable. Every decision, from nutrition to equipment, can mean the difference between a smooth ride and a roadside struggle. Among the essentials, a dependable electric bike pump is crucial—not just for emergencies, but for maintaining peak performance across daunting distances. Today I would like to share my personal review of the new Cycplus flagship; the Cycplus AS2 Ultra… the proud successor of the Cycplus AS2 Pro. Look good, feel good, ride good… the one and only Cycplus AS2 Ultra electric bike pump review.
My electric bike pump collection
As someone who owns and has thoroughly tested a wide range of electric bike pumps—including the COOSPO AP-B1, Mini Fumpa Pump, big Fumpa Pump, Cycplus AS2 Pro, and the Cycplus AS2 Ultra—I believe I am uniquely qualified to review these essential cycling tools. My experience spans countless ultra-distance rides and routine use at home, allowing me to evaluate each pump not only on my gravel bike, race bike and mountain bike but also on classic city bikes and e-bikes. This hands-on, real-world testing ensures that my insights are grounded in practical, diverse scenarios, giving you an honest and comprehensive perspective on which pump will best suit your cycling needs.
Who Is Cycplus? Pioneers in Portable Cycling Tech
Cycplus has built a reputation in the cycling world for designing innovative, high-quality accessories tailored to every level of rider. Their focus on portability, reliability, and user-friendly design has made them a go-to brand for bike pumps, GPS units, and other riding essentials. Whether you’re a weekend warrior or an ultra-endurance athlete, Cycplus consistently delivers gear that keeps you rolling.
Cycplus AS2 Ultra electric bike pump review: Specs and Features
The new Cycplus AS2 Ultra takes everything loved about the AS2 Pro and refines it for weight-conscious cyclists. Weighing only 87 grams, it’s the lightest pump in the Cycplus lineup. Despite this feather-light build, the AS2 Ultra packs a punch: it can inflate two 700C25 tires to 110 PSI on a single charge, reach 120 PSI in just two minutes, and recharge fully in a swift 25 minutes. For ultra racers like myself, these specs aren’t just numbers—they’re peace of mind on remote stretches of road where every gram and every minute counts.
- Weight: 87g (33g lighter than AS2 Pro)
- Max Pressure: 120 PSI
- Inflation Capacity: Two 700C25 tires to 110 PSI per charge
- Recharge Time: 25 minutes
- Price: $119 or €125
AS2 Ultra vs AS2 Pro: Real-World Comparison
Having used both pumps during high-stakes races, the lightness of the AS2 Ultra is immediately noticeable. And this not just in hand, but also on long climbs where every gram shaved off the bike pays dividends.
The CYCPLUS AS2 Ultra and AS2 Pro are both high-performance electric bike pumps, but they cater to slightly different priorities—compact portability vs. maximum performance.
The AS2 Ultra is the most compact and lightweight option in the CYCPLUS AS2 lineup, weighing only 87g with dimensions of 64×47.5×28mm. This makes it ideal for cyclists who want a pump that’s unobtrusive and easy to carry. Despite its small size, it delivers a strong performance with a maximum pressure of 120 PSI, 1 PSI accuracy, and real-time pressure monitoring. It runs on a 7.4V 400mAh battery, inflating up to 2×110 PSI on a full charge, with an inflation speed of 2 minutes to reach 120 PSI. Besides the housing is made of magnesium instead of aluminium like the AS2 Pro. Magnesium offers more rigidity, allowing the pump to handle higher pressures with ease.
In contrast, the AS2 Pro prioritizes power and speed. It is larger and heavier at 120g and 70×49×28mm, but it features a more powerful 7.4V 420mAh battery. This allows it to achieve a faster inflation speed of just 1 minute 35 seconds to 120 PSI, and a slightly greater inflation capacity of 2×120 PSI per charge. It also includes an extended air tube, the same as the AS2 Ultra.
Conclusion Cycplus AS2 Ultra vs AS2 Pro
Overall, the AS2 Ultra is the better choice for cyclists looking to minimize weight and size without sacrificing too much in performance. While the AS2 Pro is better suited for those who want the fastest and most powerful option, even if it means carrying a slightly bulkier device. Personally I am carrying the Cycplus AS2 Ultra during my rides while the AS2 Pro is my perfect companion for every day use. To inflate tires in my garage, to inflate balls,… .
Comparison Table: AS2 Pro vs AS2 Ultra
| Specification | AS2 Pro | AS2 Ultra |
| Weight | 120g | 87g |
| Dimensions | 70×49×28mm | 64×47.5×28mm |
| Max Pressure | 120 PSI | 120 PSI |
| Real-time Pressure | ✓ | ✓ |
| Battery | 7.4V 420mAh | 7.4V 400mAh |
| Accuracy | 1 PSI | 1 PSI |
| Inflation Speed | 1min35s (to 120 PSI) | 2min (to 120 PSI) |
| Endurance (700*25c) | 2×120 PSI | 2×110 PSI |
| Extended Air Tube | ✓ | ✓ |
| Charging Time | 30min | 25 min |
| Charging Port | Type-C | Type-C |
| Price | $119 or +/- €100 | $140 or +/ €125 |
The Full Cycplus E-Pump Lineup: Picking the Right Tool
The CYCPLUS AS2 Ultra stands out in the comparison as the most lightweight and compact option among the four models in the AS2 series. At just 87 grams and with dimensions of 64×47.5×28mm, it is significantly smaller and lighter than its counterparts. This makes it an ideal choice for cyclists who prioritize portability and want to minimize bulk and weight in their gear. It is perfect for long rides or minimalist setups where every gram counts.
Despite its compact size, the AS2 Ultra delivers a solid 120 PSI max pressure and includes features such as real-time pressure monitoring, 1 PSI accuracy, and Type-C charging. It has a 7.4V 600mAh battery, which is slightly more powerful than the standard AS2 model, allowing it to achieve an inflation speed of 2 minutes to 120 PSI, and an endurance of 2*120 PSI—making it a practical balance of size and performance.
In contrast, the AS2 Pro Max is the most powerful and durable model, with a much larger battery (11.1V 600mAh), the highest endurance (4*120 PSI), and a heavier, bulkier build (205g, 81×60×32mm). The AS2 Pro, while also high-performing with the fastest inflation speed (1min35s) and a strong battery (7.4V 420mAh), is still almost 40% heavier than the Ultra. The base AS2 model is lighter than the Pro and Pro Max but still heavier than the Ultra and limited by a lower max pressure (100 PSI) and weaker battery (7.4V 300mAh).
Overall, if compactness and weight are your top priorities, the AS2 Ultra is clearly the best option. It offers a strong balance of features and portability, ideal for cyclists who want a discreet yet capable pump on the go.
Cycplus AS2 Ultra Reduction Promo Code
I want to assure you that my review of the Cycplus AS2 Ultra is completely honest and unbiased. I receive no commercial benefits for sharing my experience or recommending this product. However, the team at Cycplus read my review and were so thrilled with my genuine feedback that they offered something special for my readers: a 5% discount promo code! Because I truly appreciate and value my blog audience, I’m excited to share this exclusive offer with you. Just use the promo code VELOFANATICS when purchasing the Cycplus AS2 Ultra to enjoy your 5% reduction. You can head directly to the Cycplus shop using the link below. Happy pumping!
Conclusion of my Cycplus AS2 Ultra electric bike pump review
In summary, Cycplus continues to push the boundaries of portable cycling tech, and the AS2 Ultra stands out as the ultimate solution for ultra cyclists who value speed, lightness, and reliability. For those who ride far and fast, it’s a game-changer. But with a pump for every ride style and need, Cycplus ensures every cyclist has access to top-tier performance. My recommendation: choose the pump that matches your ambitions and enjoy the ride, wherever it takes you.
If you have more questions, don’t hesitate to contact me via welcome@velofanatics.com . I would be more than happy to answer any questions. Ultra race related or not…
Thanks for that very complete review.
You are most welcome Laurent.
Thank you for the review. I’m very much confused with mentioning as2 pro has 4200mah which only has 420, and mentioning as2 pro max has 4100 mah which only has 600. where and how did you come by especially 4100mah? since the 4200mah on the pro might’ve been a typo?
Thanks.
Hi John, thanks for the comment. You are right. I must have made two typos in this paragraph. My apologies. Throughout the article I have always mentioned 420 for the pro except in this parapgraph. I have now made the necessary corections. Regards and thanks again, Wim
Fikk tips om å kjøpe denne pumpen
Dear Ann, thanks a lot for your comment. I hope you are a happy user then! I own a few electric bike pumps (6 in total alreday 🙂 ) from different brands and although the differences are small, the Cycplus bike pump is my favorite. Price-quality it is the best for me. Really reliable.