SPEED FOR ALL ROADS AHEAD
Zipp's 303 S Series Tubeless Disc Brake wheelset provides today's cyclists the versatility they demand with the speed they crave. Expanding greatly on its heritage of conquering the Spring Classics, this 303 wheelset maintains its ideal-for-every-terrain 45mm rim depth but adds a significantly wider internal width to provide greater performance and ride quality in almost every measurable way. Road bikes are more versatile than ever, no matter the road surface, but just as fast as before. The 303 S offers an entirely new rim profile and design to optimize rider performance on this new breed of bike. This wheelset is tubeless for disc-brake bikes, allowing the ability to run wide tires at lower pressures for race-ready speed on or off the pavement. The 303 S is among our lightest wheelsets, optimized for top aero performance with a 28mm tire but capable of handling gravel tires up to 50mm wide. The 303 S Series borrows design concepts from the higher-level 303 Firecrest Tubeless Disc-brake wheelset to gain speed through increased efficiency. That is achieved by creating a wheel with reduced: Wind resistance, rolling resistance, rider fatigue, and weight. The key innovation is in the 303 S Series' rim design. Its 45mm rim depth is the same as its predecessor, the 302 Disc brake. But its rim width is 2mm wider, at 27mm, and its tire bed is a full 7mm wider, at 23mm. That rim platform is designed to be the fastest with a 28mm tire. The wide rim optimizes tire profile to allow lower tire pressure. That helps to reduce rolling resistance and provides a more compliant ride. The result of all this is a 10 percent watt savings vs. a top peer wheel in total power required to ride 40kph on a smooth flat road with a 28mm tire, according to internal Zipp testing. This groundbreaking wheelset also features all-new cosmetics, setting the rider apart from the pack, and comes at an attractive price.
FEATURES
- New Zipp graphics and cosmetic identity that scream speed
- Fastest with 28mm, fits wide gravel tires as well
- 76 / 176 DB hubs with Center locking interface
- XDR driver body option
- Wide rims optimize tire profile to allow lower tire pressure, especially with tubeless. The result is a larger contact patch for increase grip for confident cornering, descending, and handling in wet conditions.
- Lower tire pressures and larger volume provides a compliant ride with fewer vibrations.
- Significant watt savings when running larger tires at lower pressure.
- Wide hookless rims create a seamless transition to the tire, reducing drag.
SPECIFICATIONS
Orientation (wheels): Rear
Size (wheels): 700c
Rim construction: Carbon
Tire compatibility: Clincher Tubeless Ready
Rim depth: 45mm
Surface texture: Smooth
Brake compatibility: Disc (Center Lock)
Rim - inside width: 23mm
Rim profile: Symmetrical
Rim finish: UD fiber / Bake-On labels / Matte clear coat
Color (Decal): Standard
Nipple material: Brass
Nipple anti-rotation: Sapim Secure-Loc
Spoke type: CX-Sprint
Spoke count: 24
Spoke pattern: 2 Cross
Hub: 176D
Driver body type: SRAM/Shimano Road
Color (hub): Black
Axle type (Wheels): TA 12x142
Axle material: Aluminum front & rear
Bearings: Cartridge - Stainless Steel
Driver Mechanism: 3 Pawls Leaf Spring
Driver body material: Aluminum
Max tire pressure: 73psi
Max recommended rider weight: 250lbs
Just above the 'Add to basket' button you will see the item availability. We have 3 different availability stock flags on our website which will determine how long an order will take to arrive.
In Stock in Kircaldy Shop
This means that we physically have the item in the shop. If you choose one of our Priority Delivery options then you can expect your order within 1 to 3 working days. If you choose a Non Priority Delivery service you can expect your order within 3 to 5 working days.
In Stock at Supplier
Our stock system is linked in with our suppliers stock system which allows us to offer a wider product range, but does increase the delivery times a little. If you choose one of our Priority Delivery options you can expect the order within 3 to 5 working days. If you choose Non Priority Delivery you can expect the order within 5 to 10 working days, although this is completely determined by the speed of the item coming from our supplier.
Out of Stock
This means that both ourselves and our suppliers are out of stock of the item. Although the website won't allow you to order something with this stock flag you are more than welcome to contact us with the Product ID. We may be able to back order it for you, or at least see if we can provide an estimated restocking date.
If you need an order quicker than this please email us with the product ID to find out if this is possible to avoid disappointment.
What about bikes?
We aim to dispatch all bikes within 5 working days, but during busy periods we may have a few builds in the queue and could take a bit longer. If this is a concern or you need the bike before a certain date then please email us to make sure we can achieve this and avoid any disappointment. We will email you the day of dispatch and you can expect the bike the following day. If you provide a mobile number on your order the courier will also send you a text message 1 hour before delivery so you know exactly what time to expect it.
Who do you use to send orders?
We use Royal Mail for most of your orders unless they are bulky or valuable, in which case we will send the order using DPD. You can also specify DPD at checkout if you prefer to have your item delivered with an hours notice in the form of email or text from the courier.
Mountain Bike (Hardtail & Full Suspension) | |||
---|---|---|---|
Rider Height | Frame Size | ||
4' 10" - 5' 2" | 148 - 158cm | 13-14" | XS |
5' 2" - 5' 6" | 168 - 168cm | 15-16" | S |
5' 6" - 5' 10" | 168 - 178cm | 17-18" | M |
5' 10" - 6' 1" | 178 - 185cm | 19-20" | L |
6' 1" - 6' 4" | 185 - 193cm | 21-22" | XL |
6' 4" - 6' 6" | 193 - 198cm | 23-24" | XXL |
Women's Mountain Bike (Hardtail & Full Suspension) | |||
---|---|---|---|
Rider Height | Frame Size | ||
4' 10" - 5' 2" | 148 - 158cm | 13-14" | XS |
5' 2" - 5' 6" | 168 - 168cm | 15-16" | S |
5' 6" - 5' 10" | 168 - 178cm | 17-18" | M |
5' 10" - 6' 1" | 178 - 185cm | 19"+ | L |
Road Bike Sizing | |||
---|---|---|---|
Rider Height | Frame Size | ||
4' 10" - 5' 0" | 148 - 152cm | 47 - 48cm | XXS |
5' 0" - 5' 3" | 152 - 160cm | 49 - 50cm | XS |
5' 3" - 5' 6" | 160 - 168cm | 51 - 53cm | S |
5' 6" - 5' 9" | 168 - 175cm | 54 - 55cm | M |
5' 9" - 6' 0" | 175 - 183cm | 56 - 58cm | L |
6' 0" - 6' 3" | 183 - 191cm | 58 - 60cm | XL |
6' 3" - 6' 6" | 191 - 198cm | 61 - 63cm | XXL |
Womens Road Bike Sizing | |||
---|---|---|---|
Rider Height | Frame Size | ||
4' 10" - 5' 1 " | 147 - 155cm | 44 - 46cm | XXS |
5' 1 " - 5' 3" | 155 - 160cm | 47 - 49cm | XS |
5' 3" - 5' 5 " | 160 - 165cm | 50 - 52cm | S |
5' 5 " - 5' 8 " | 165 - 172cm | 53 - 55cm | M |
5' 8 " - 5' 10" | 172 - 180cm | 56 - 57cm | L |
Hybrid Bike Sizing | ||||
---|---|---|---|---|
Rider Height | Frame Size | |||
4' 10" - 5' 1" | 147 - 155cm | 13-14" | 47 - 49cm | XS |
5' 1" - 5' 5" | 155 - 165cm | 15-16" | 50 - 52cm | S |
5' 5" - 5' 9" | 165 - 175cm | 17-18" | 53 - 54cm | M |
5' 9" - 6' 0" | 175 - 183cm | 19-20" | 55 - 57cm | L |
6' 0" - 6' 3" | 183 - 191cm | 21-22" | 58 - 61cm | XL |
6' 3" - 6' 6" | 191 - 198cm | 23-25" | 61 - 63cm | XXL |
Children's Bike Sizing | |||
---|---|---|---|
Age & Height | Wheel Size | ||
2 - 5 years | 2' 10" - 3' 7" | 85 - 110cm | Balance Bike |
2 - 4 years | 2' 10" - 3' 4" | 85 - 100cm | 12" wheel |
3 - 5 years | 3' 1" - 3' 7" | 95 - 110cm | 14" wheel |
5 - 7 years | 3' 7" - 4' 0" | 110 - 120cm | 16" wheel |
7 - 9 years | 4' 0" - 4' 5" | 120 - 135cm | 20" wheel |
9 - 11 years | 4' 5" - 4' 9" | 135 - 145cm | 24" wheel |
11+ years | 4' 9" + | 145cm + | 26" wheel |
Men's Clothing
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Apparel | |||||
---|---|---|---|---|---|---|
S | M | L | XL | XXL | ||
Chest (1) | 36.5 - 38" | 38 - 39.5" | 39.5 - 41" | 41 - 42.5" | 42.5 - 44" | |
Waist (2) | 30.5 - 32" | 32 - 33.5" | 33.5 - 35" | 35 - 36.5" | 36.5 - 38" | |
Hip (3) | 36.5 - 38" | 38 - 39.5" | 39.5 - 41" | 41 - 42.5" | 42.5 - 44" | |
Inseam (4) | 31.5" | 32" | 32.5" | 33" | 33.5" |
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Gloves | |||||
---|---|---|---|---|---|---|
S | M | L | XL | XXL | ||
Inch | 7.25 - 8" | 8 - 8.75" | 8.75 - 9.5" | 9.5 - 10.25" | 10.25 - 11" | |
CM | 18.5 - 20.3 | 20.3 - 22.2 | 22.2 - 24 | 24 - 26 | 26 - 28 | |
EUR Size | 7.5 - 8 | 8.5 - 9 | 9.5 - 10 | 10 - 10.5 | 11 |
Footwear | ||||||||
---|---|---|---|---|---|---|---|---|
EUR | 41 | 42 | 42.5 | 43 | 44 | 45 | 45.5 | 46 |
US | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 |
UK | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 |
Length(cm) | 26 | 26.5 | 27 | 27.5 | 28 | 28.5 | 29 | 29.5 |
Women's clothing
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Apparel | ||||||
---|---|---|---|---|---|---|---|
XS | S | M | L | XL | XXL | ||
Chest (1) | 31 - 33" | 33 - 35" | 35 37.5" | 37.5 - 40" | 40.5 - 42.5" | 42.5 - 45" | |
Waist (2) | 23 - 25" | 25 - 27" | 27 - 29.5" | 29.5 - 32" | 32 - 34.5" | 34.5 - 37" | |
Hip (3) | 33 - 35" | 35 - 37" | 37 - 39" | 39.5 - 42" | 42 - 45" | 45 - 47.5" | |
Inseam (4) | 29" | 29.5" | 30" | 30.5" | 31" | 31.5" |
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Gloves | |||
---|---|---|---|---|
S | M | L | ||
Inch | 6.5 - 7.25 | 7.25 - 8" | 8 - 8.75" | |
CM | 16.5 - 18.4 | 18.4 - 20.3 | 20.3 - 22.9 | |
EUR Size | 6.5 - 7 | 7.5 - 8 | 8.5 - 9 |
Footwear | ||||||||
---|---|---|---|---|---|---|---|---|
EUR | 37 | 37.5 | 38 | 38.5 | 39 | 40 | 40.5 | 41 |
US | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 |
UK | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 |
Length(cm) | 22.5 | 23 | 23.5 | 24 | 24.5 | 25 | 25.5 | 26 |
Kids
Apparel | ||||
---|---|---|---|---|
S | M | L | XL | |
Age | 7/8 yrs | 10 yrs | 12 yrs | 14 yrs |
Chest | 25 - 26.5" | 26.5 - 28.5" | 28.5 - 29.5" | 29.5 - 32" |
Waist | 23 - 24.5" | 24.5 - 25.5" | 25.5 - 26.5" | 26.5 - 28.5" |
Height | 48 - 54" | 54 - 57" | 57 - 60" | 60 - 62" |
Weight | 49 - 59lbs | 59 - 75lbs | 75 - 89lbs | 89 - 100lbs |
Unisex
Arm Length is measured shoulder to wrist with arm bent at 90deg
**: Knee and Leg length is measured according to garment length.
*: Circumference
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Knee Warmers | |||||
---|---|---|---|---|---|---|
XS | S | M | L | XL | ||
Length ** | 14.25" | 15.25" | 16.25" | 17.25" | 18.25" | |
Thigh (b)* | 19.5" | 21.25" | 23" | 24.75" | 26.5" | |
Calf (c)* | 13.25" | 14" | 14.75" | 15.5" | 16.5" |
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Arm Warmers | |||||
---|---|---|---|---|---|---|
XS | S | M | L | XL | ||
Arm Length (a) | 23.5" | 24" | 24.5" | 25.25" | 26" | |
Bicep | 12" | 12.5" | 13" | 13.5" | 14.25" | |
Wrist | 6.75" | 7" | 7.25" | 7.5" | 7.75" |
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Leg Warmers | |||||
---|---|---|---|---|---|---|
XS | S | M | L | XL | ||
Length ** | 23" | 24" | 25" | 26" | 27" | |
Thigh (b)* | 19.5" | 21.25" | 23" | 24.75" | 26.5" | |
Ankle (c)* | 9" | 9.5" | 10" | 10.5" | 11" |
Socks | ||||
---|---|---|---|---|
S | M | L | XL | |
US Mens | n/a | 6 - 8 | 8 - 10 | 10+ |
US Womens | 5 - 7 | 7 - 9 | 9+ | n/a |
EUR | 35 - 38 | 38.5 - 41 | 41 - 44 | 44+ |
UK | 2.5 - 4 | 4.5 - 6.5 | 7 - 10 | 10+ |
Overshoes | |||||
---|---|---|---|---|---|
S | M | L | XL | XXL | |
US Mens | < 6 | 6.5 - 8 | 8.5 - 10 | 10.5 - 12 | 13+ |
US Womens | < 8 | 8.5 - 10 | 10.5 - 12 | n/a | n/a |
EUR | < 39 | 39.5 - 42 | 42.5 - 44 | 44.5 - 46 | 46.5+ |
UK | < 5.5 | 6 - 7.5 | 8 - 9 | 8.5 - 11 | 10+ |
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See our finance info page for details
- Classic Credit 48 Months 15.9% on most orders where the goods total is £1999.00 or more
- Classic Credit 36 Months 15.9% on most orders where the goods total is £1499.00 or more
- Interest Free Finance (24 Months) on most orders where the goods total is £2999.00 or more
- Interest Free Finance (18 Months) on most orders where the goods total is £1999.00 or more
- Interest Free Finance (12 Months) on most orders where the goods total is £999.00 or more
- Interest Free Finance (10 Months) on most orders where the goods total is £899.00 or more
- Interest Free Finance (6 Months) on most orders where the goods total is £500.00 or more