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Get free shipping, on most items, with your $50 purchase today! Same day shipping on most orders if placed by 3pm PST.
PLEASE NOTE:
This offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and some exclusions apply.
Oversize Charges
Some large and/or heavy items are subject to additional oversize charges that are separate from standard shipping costs.
Bike Build Process
All bikes are built, tested, tuned, and ready to ride upon shipment. The bike build process typically takes 2-3 days to complete depending on the bike model and the complexity of the build.
Stock Status
Orders for in-stock items placed by 3PM PST usually ship on the same day. Orders that include special-order or backordered items may be subject to shipping delays depending on product availability. Refer to estimated delivery times in cart when selecting shipping options.
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Authorized Argon 18 Retailer
Insider - Exclusive Coupons and more.
Available to physical shipping addresses in the 48 continental United States. Some items are subject to additional oversize charges. All bikes are built prior to shipment and may take 2–3 days prior to shipping. Learn more
Buying from an authorized retailer means your Argon 18 purchase is covered by the full manufacturer's warranty. Questions? Our Gear Advisors are here to help.
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Add a little peace of mind to your purchase with a protection plan from EXTEND. Full accident protection coverage available right away and even after your manufacturer's warranty expires.
Accidental damage
We'll replace or repair your damaged product. Unintentional breaks, drops, or spill are all covered.Malfunction protection
When regular use of your product over time results in mechanical or electrical failure.Zero deductible
No fees. No deductibles. No hidden costs when we repair your product.Customer focused support
We're always happy to help, and available 24/7
*Free Shipping over $50
90-Day Returns
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Price Protection
Available to physical shipping addresses in the 48 continental United States. Some items are subject to additional oversize charges. All bikes are built prior to shipment and may take 2-3 days prior to shipping. Learn more
We accept returns within 90 days of the original purchase, including orders placed with Affirm Financing. Learn more.
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If we lower our published price (the price shown on our website) of an item within 30 days of your purchase, you may be eligible to receive a refund of the difference via a Jenson USA gift card.
The Argon 18 Sum Pro is the quiver-killer that refuses to be pigeonholed — equally at home on a brutal climb, holding a wheel in a fast crit, or drilling it to the line. Built on a higher-spec carbon platform tuned for race-level performance, the Sum Pro delivers exceptional stiffness, compliance, and handling in a package that's as fast on the flats as it is on steep roads. This Force AXS D1 build pairs SRAM's fully wireless 2x drivetrain and integrated power meter with Zipp 404 Firecrest wheels and the Vision Metron 5D ACR EVO integrated cockpit — serious race-ready performance at an outstanding value.
| Frame | Sum Pro Carbon, Integrated Cable Routing, 3D Headset, 30c (32mm) Tire Clearance |
|---|---|
| Fork | Sum Pro Specific Carbon |
| Headset | FSA Headset NO.55R 1.5" + 3D |
| Front Derailleur | SRAM Force AXS D1 |
| Rear Derailleur | SRAM Force AXS D1 |
| Shifters | SRAM Force AXS D1 |
| Crankset | SRAM Force AXS Power Meter, 48/35T, 165mm (XXS), 170mm (XS/S), 172.5mm (M/L), 175mm (XL) |
| Bottom Bracket | CeramicSpeed BB86 DUB Coated |
| Chain | SRAM Force, 12-Speed |
| Cassette | SRAM XG-1270, 10-33T, 12-Speed XDR |
| Brakes | SRAM Force AXS Hydraulic Disc |
| Rotors | SRAM Centerlock Paceline X, F: 160mm / R: 140mm |
| Wheelset | Zipp 404 Firecrest |
| Tires | Vittoria Corsa Pro TLR, 700x28c, Tubeless Ready |
| Tire Clearance | 30c (32mm) |
| Handlebar | Vision Metron 5D ACR EVO Integrated Bar/Stem, 380mm (XXS/XS/S), 400mm (M/L), 420mm (XL) |
| Bar Tape | Ciclovation Leather Touch Tornado Gloss |
| Seatpost | Sum Pro Specific Carbon |
| Saddle | Repente Quasar CR Carbon Rail |
| Intended Use | Road, Racing, Climbing, Criterium |
Note: Components are subject to change without notice.
| Size | XXS | XS | Small | Medium | Large | XL |
|---|---|---|---|---|---|---|
| A: Seat Tube Length | 395 | 425 | 460 | 505 | 550 | 595 |
| B: Effective Top Tube | 503 | 520 | 538 | 557 | 578 | 600 |
| C: Stack | 471 | 493 | 516 | 540 | 565 | 592 |
| D: Reach | 375 | 382 | 389 | 397 | 405 | 414 |
| F: BB Drop | 69 | 73 | 77 | 77 | 77 | 77 |
| G: Head Tube Length | 69 | 85 | 101 | 126 | 152 | 180 |
| H: Head Tube Angle | 71.2 ° | 72.1 ° | 72.7 ° | 72.7 ° | 72.7 ° | 73.0 ° |
| I: Seat Tube Angle | 75.0 ° | 74.5 ° | 74.0 ° | 73.5 ° | 73.0 ° | 72.5 ° |
| J: Standover Height | 676 | 700 | 727 | 766 | 804 | 841 |
| K: Chainstay Length | 410 | 410 | 410 | 410 | 410 | 410 |
| L: Wheelbase | 967 | 972 | 975 | 990 | 1006 | 1020 |
| Frame Size | XXS | XS | Small | Medium | Large | XL |
|---|---|---|---|---|---|---|
| Size Range | 44-46 cm | 47-50 cm | 51-53 cm | 54-56 cm | 57-59 cm | 60-62 cm |
| Size | XXS | XS | Small | Medium | Large | XL |
|---|---|---|---|---|---|---|
| A: Seat Tube Length | 15.6 | 16.7 | 18.1 | 19.9 | 21.7 | 23.4 |
| B: Effective Top Tube | 19.8 | 20.5 | 21.2 | 21.9 | 22.8 | 23.6 |
| C: Stack | 18.5 | 19.4 | 20.3 | 21.3 | 22.2 | 23.3 |
| D: Reach | 14.8 | 15.0 | 15.3 | 15.6 | 15.9 | 16.3 |
| F: BB Drop | 2.7 | 2.9 | 3.0 | 3.0 | 3.0 | 3.0 |
| G: Head Tube Length | 2.7 | 3.3 | 4.0 | 5.0 | 6.0 | 7.1 |
| H: Head Tube Angle | 71.2 ° | 72.1 ° | 72.7 ° | 72.7 ° | 72.7 ° | 73.0 ° |
| I: Seat Tube Angle | 75.0 ° | 74.5 ° | 74.0 ° | 73.5 ° | 73.0 ° | 72.5 ° |
| J: Standover Height | 26.6 | 27.6 | 28.6 | 30.2 | 31.7 | 33.1 |
| K: Chainstay Length | 16.1 | 16.1 | 16.1 | 16.1 | 16.1 | 16.1 |
| L: Wheelbase | 38.1 | 38.3 | 38.4 | 39.0 | 39.6 | 40.2 |
| Frame Size | XXS | XS | Small | Medium | Large | XL |
|---|---|---|---|---|---|---|
| Size Range | 44-46 cm | 47-50 cm | 51-53 cm | 54-56 cm | 57-59 cm | 60-62 cm |
CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP") Lead, which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
Most items SHIP SAME DAY if ordered by 3pm PST and FREE SHIPPING on orders over $50. Please note that oversize charges may still apply on some heavy or large items and free shipping does not apply to PO Boxes.
1-day free standard Shipping on most orders to California, 2-day free standard Shipping on most orders to Nevada, Arizona, & Utah. Other states can expect delivery within 3 to 5 days.
Jenson USA ships worldwide, including APO/FPO addresses. For a more specific shipping quote and transit time estimate, simply add the items you are interested into your shopping cart and look for the "Shipping Options" box at the top of the cart page. You don't have to login or create an account to see shipping charges and time in transit estimates.
Bike Shipping: Most complete bikes ship for a $99 oversize shipping fee, unless otherwise noted. Free shipping thresholds do not apply to complete bikes.
Some manufacturers restrict where we can ship their products. If this item has shipping restrictions, they are listed below. If you'd like to buy an item that we cannot ship to your address, we can accept your foreign credit card and ship it to a US address for you.
Due to manufacturer restrictions, this product cannot be shipped to the following locations:
We strive to get you the gear you want at a competitive price. If you find an item we offer from a competitor at a lower price, let us know. We will do our best to instantly match their price. To qualify for the Price Match, your purchase must meet the following conditions:
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Get free shipping, on most items, with your $50 purchase today. Same day shipping on most orders if placed by 3pm PST. Visit your cart and update the shipping destination to see the estimated delivery days for your order.
This offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and some exclusions apply.
Some large and/or heavy items are subject to additional oversize charges that are separate from standard shipping costs.
All bikes are built, tested, tuned, and ready to ride upon shipment. The bike build process typically takes 2-3 days to complete depending on the bike model and the complexity of the build.
Orders for in-stock items placed by 3PM PST usually ship on the same day. Orders that include special-order or backordered items may be subject to shipping delays depending on product availability. Refer to estimated delivery times in cart when selecting shipping options.