The DT Spline 1 has long set the standard for premium alloy MTB wheels, their renowned mix of ride quality, reliability and exceptional strength to weight ratios have made them starting line favourites and test winners all around the world.. so what next?Following extensive lab-based and real world testing DT's engineering team in Biel decided that there was really only one place to go ... carbon!So the 3rd generation Spline 1 now sports a brand new bespoke 30 mm wide carbon rim design to push DT's signature wheel system to ever greater heights and even lower weights,The bruiser of the range, the EXC was developed in the white heat of the Enduro World Series and designed for high-impact riding where you need something that can take the hits but not weigh you down on the ride back up,At the very centre of this system are the new Ratchet EXP 240 hubs the simplest, most reliable and lightest 240 hubs DT have ever made proving that DT remain the undisputed masters of ratchet technology,Ratchet EXP reduces the number of moving parts inside the hub and allows a wider bearing spacing, improving overall stiffness whilst improving bearing life and reducing drag, the hub still retains DT's easy tool-free servicing and ability to be worked on trailside if required,Further weight is saved by the new Swiss-made Comp Race spokes that are butted down to 1.6 mm, making them not only lighter, but give a more forgiving and damped ride, offsetting the added stiffness the move to a carbon rim often brings, just another benefit of designing and manufacturing the entire wheel system in house,Maximum recommended system weight: 130 KG,Weight: 27.5 inch, Front: 760 grams Rear: 849 grams 29 inch, Front: 828 grams Rear: 917 grams.
DT Swiss ERC 1400 SP Rear Road Disc Wheel (47mm)This carbon-rimmed ERC 1400 wheel by DT Swiss provides your racing bike with a pacy roll and top-end stiffness. Measuring a 47mm depth and a 19mm internal width, the strong rim maintains a streamlined form to keep you running with impressive speed. Designed with a tubeless-ready profile, the wheel also stays lightweight, improving the aerodynamics at your back-end. Fast-Rolling, Carbon-Fibre Road WheelPart of DT Swiss' AERO+ rim range, this ERC model is a race-ready option and its performance is enhanced by the addition of the DT240 hub and its Ratchet System 36 SL freehub. The DT240 comes laced with DT Aero Comp straightpull spokes which are pulled to optimum tension with ProLock nipples. The freehub uses its 36-tooth design to give fast engagement and high-end power transfer, plus it's Shimano 11-speed compatible. Optimised for use with CenterLock discs, the DT Swiss ERC 1400 SP DB 47mm Rear Wheel lets you ride with excellent control and all-weather stopping power, making it an excellent choice for the modern racer. Features: Rim Material: Carbon Rim Type: Clincher Internal Rim Width: 19mm External Rim Width: 27mm Rim height: 47mm Spokes: DT Aero Comp straightpull with DT ProLock hidden aluminium nipples, 2-cross lacing Hub Type: DT240 Hub Axle Type: 142x12mm thru-axle Freehub: Ratchet System 36 SL, Shimano 11-speed Tubeless-Ready: Yes Brake Standard: CenterLock disc brake Recommended Maximum Weight: 120kg Includes: Tubeless tape 21mm, Tubeless valve road 63mm, IS 6-bolt adapter Road, 5mm endcap kit, valve guard Weight: 832gBuy DT Swiss Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
DT Swiss Arc 1100 Dicut 48mm Front WheelWith a medium-profile aero rim and a smooth-spinning DT240 hub, this Arc 1100 road wheel by DT Swiss is the ideal choice for group rides and distance races. Rolling on a 17mm internal width and featuring a 48mm depth, the carbon rim reduces drag and stays stiff and responsive on every journey. Maintaining a low weight and a sturdy shape at high speeds, this tubeless-ready road wheel gives a top-level performance from start to finish. Stiff and Powerful, Carbon Road WheelDeveloped alongside aero-wheel engineers SWISS SIDE, this aero road wheel leads you through every race with superb aerodynamics, enhanced by the DT Aerolite spokes and DT240 hub. The spokes are pulled tight through the rim by ProLock nipples, with the hub using its SINC ceramic bearings to deliver a smooth and consistent spin for improved handling and control. The DT240 also gives a firm and supportive experience on the fastest rides.The carbon rim brake surface allows for confident and reliable stopping, making the DT Swiss Arc 1100 Dicut 48mm Front Wheel a top choice for the pacy and focused road rider.Features: Rim Material: Carbon Rim Type: Clincher Internal Rim Width: 17mm External Rim Width: 25mm Rim Height: 48mm Spokes: DT AeroLite straightpull with DT ProLock hidden aluminium nipples, radial lacing Hub Type: DT240 Hub Axle Type: 100x5mm QR Tubeless-Ready: Yes Brake Standard: Rim Brake Recommended Maximum Weight: 100kg Includes: RWS Titan, Tubeless tape 19mm, Swissstop black prince, valve guard, wheel bag Weight: 686g
3T Discus C45 Ltd Stealth WheelsetIdeal for riders who want to upgrade their existing road or gravel bike, this wheelset delivers fantastic aerodynamics, strength and comfort on every ride. It features a unidirectional carbon ultralight construction, which allows you to benefit from its incredible strength to weight ratio. Aerodynamically optimised but shallow enough to keep you fully stable in strong crosswinds, these rims are light on climbs, ultra-durable and ensure lasting comfort. If you're likely to encounter poor road surfaces, gravel or even some light single track on weekend adventures, these are the rims for you.With the aerodynamic performance of the very best 60mm deep rims but in a 45mm format, the C45 rims mean that you can roll faster for longer. The wider rim section means that a standard 25mm road tyre sits at 28mm wide - not only ideal for a 3T Strada frameset but saving on weight of wider stock tyres.Remarkably, the aerodynamic properties of the C45 are retained all the way up to 40mm gravel tyres, giving you the flexibility to explore untrammelled tracks and poor surfaces at speed. If you value comfort as well as maintaining peak performance and rolling speed in harsh conditions this is a solid choice.Futureproof and forward-thinking, each set of C45 wheels comes with both SRAM XDR and Shimano driveshells so that you can swap the wheels onto future iterations of your bike when the time comes.The asymmetric carbon construction of the 3T Discus C45 Ltd Stealth Wheelset's rims allows for spokes to be offset - compensating for the space required for cassettes and brake rotors on the hubs. This enables wheels to be built with equal spoke angles on the drive and non-drive sides and crucially for you means greater stiffness and lasting durability. - Ideal for premium all-road/gravel/adventure bikes- Ultra-lightweight unidirectional carbon fibre construction- 700c with 45mm deep section but aerodynamic properties of 60mm- Innovative offset double angle drilling for maximal stiffness- Tubeless-ready clincher formatFeatures: Material: Unidirectional Carbon - ultralight layupUse: Road, Gravel and AdventureRim Size: (28"/700c) 32mm wide, 45mm deepETRTO: 622x25cTubeless Ready: YesType: ClincherSpokes: Sapim CX-Ray Straight-pull, Stainless Steel, black finish, double-butted aeroSpoke Count: Front: 24; Rear: 24Hubs: 3T GW Bombproof Hubs, Centerlock type, oversized light Alloy hub bodies, spindles & freehub body, adjustable bearings, black satin anodisedFreehub Option: Shimano/SRAMWheel Size: 700cNipples: Sapim chrome-plated brassFront Hub Spec: Thru-axle 100x12mmRear Hub Spec: Thru-axle 142x12mmRear Hub Compatibility: 10/11s Shimano freewheel and SRAM XDR Driver body includedSingle or Pair: PairPart Number: 3T7009DQDF81W Weight: 1640gBuy 3T Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
While there may be a linear relationship between increased tire size and increased fun this relationship only holds true when wider tires are paired with the correct width rims. Having a 2.8' or high-volume tire mated to a narrow rim makes for a squirmy poor handling experience and when you’re on the hunt for additional fun these characteristics are undesirable. Lucky for you the new age of traction stability and speed has arrived—and its name is the Traverse 38 SL Fattie 27.5. Along with light overall weight stiffness and durability another top priority for the Traverse SL was ease of use. First off we got rid of the creaky straight-pull spokes and corrosion-prone alloy nipples. Next up we landed on 28 J-bend spokes for front and rear wheels that are all the same length—making it easy to find replacements if needed. And finally we engineered a new hub design with a wider profile and higher flange to aid in overall stiffness. While our 38-millimeter Traverse SL is already wider than most offerings the benefits of three-inch tires become more apparent with a proper rim interface. In search for the proper width our engineers tested various iterations from 30 to 45 millimetres to determine where the sweet spot lies. What they ended up with is a 38-millimeter internal rim width that turns the Traverse 38 SL Fatties into descending machines . A wide internal rim width endows riders with a variety of advantages that are exemplified even more with plus-sized tires. The extra width allows for more tire volume translating into more supple ride qualities and better support for the tire meaning that you'll experience less 'burping' when riding tubeless and a drastic increase in traction. After determining the proper rim width for the plus-sized application we began designing the rim using the same low-weight high-strength technologies used in the Traverse SL and the Control SL. With this we started with our Zero Bead Hook design that effectively eliminates the biggest weak spot found in traditional rims and topped it off by using high-modulus carbon fibre to keep the weight down. And to further this theme the wheels also include the Roval tubeless plug system which sheds an additional 50 grams-per-wheel compared to a rim strip Each Traverse 38 SL Fattie is hand-built to our own alloy hubs with DT Swiss Competition Race spokes. Inside our hubs you'll find sealed cartridge bearings all-around and a quick-engaging 54t DT Swiss star ratchet system in the rear that allows you to power over rocks and roots without delay. And while machines do a decent job of building wheels we choose professionally trained humans to build ours as they catch various flaws that a machine would otherwise miss. Rim Type: Carbon clincher 2Bliss Ready Zero Bead Hook design. Black graphic under clear coat. Rim Material: Carbon fibre Rim Width: 38mm internal Front Spoke Pattern: Two-cross Rear Spoke Pattern: Two-cross Spoke Count: 28h Front 28h Rear Spoke Type: DT Swiss Competition Race J-bend Nipple Type: DT Swiss Brass Pro Lock hexagonal Front Hub: Alloy body 15mmx110 thru-axle 19 and 31mm OD end cap options included. Rear Hub: CNC-machined alloy body high-quality DT 240 internals and 54t quick engagement ratchet system cassette includes SRAM XX1 11-speed freehub and 148 end caps. Roval Engineered J-bend hubshells have a single spoke length for each wheelset. Bearing Type: Sealed cartridge Assembly Method: Hand-built Every wheel includes tubeless valve stems in order to make tubeless set-up a touch easier. Total Wheelset Weight: 1830g
Mavic XA Elite Carbon Boost XD WheelsetBy equipping this fantastic carbon-built Elite trail wheel with Boost hub spacing and an XD compatible freewheel, Mavic has created a tech and spec filled wheelset, fit for taming every trail. Stiff and dependable across every terrain, this set provides you with quality performance from front to rear as you tear through every trail in your way.Top-Performance Trail MTB WheelsFeaturing wide and wonderful 100% unidirectional carbon fibre rim, UST tubeless ready for enhanced rolling and cornering control, each wheel runs with speed, dependability and precision handling. Kitted out with an Instant Drive 360 freewheel on the back wheel, a lightning quick engagement gives terrific power transfer for immediate acceleration and hill-attacking prowess, plus it's ready for a SRAM Eagle 12-speed drivetrain. Sturdy, supportive straightpull spokes keep a flex-free shape and performance on both wheels, aided by the wide spoke angle afforded by the Boost spacing, making the XA Elite Carbon Boost XD wheels a modern MTB marvel. Features:Features:Rims: Material: Rim: 100% Unidirectional Carbon Fibre; Spokes: Steel; Hubs: Aluminium Drilling: Traditional Valve Hole Diameter: 6.5mm Rim Internal Width: 30mm Rim Profile: Hookless Tyre: UST Tubeless and tubetype Disc Standard: 6-bolt Spokes: Material: Steel Shape: Straight pull, round Count: Front and Rear: 24 Lacing: Front and Rear: 2-crossedHubs: Axles: Front axle: convertible from 15mm thru axle to Quick Release with adapters; Rear axle: 12mm thru axle, convertible to Quick Release with adapters Hub Body: Aluminium front and rear Axle Material: Aluminium Bearings: Auto adjust sealed cartridge bearings (QRM Auto) Hub Spacing: Boost: Front: 110mm; Rear: 148mm Freewheel: Instant Drive 360 Freewheel Compatibility: XDTechnologies: UST Tubeless Ready: The UST concept improves traction, control and comfort while reducing inertia and flats.Buy Mavic Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
*Please Note: Images for display purposes only - check description for specifications.Without LimitsRoad bikes are going where they’ve never gone before, are expected to do more, and are being ridden harder than ever. At the same time disc brakes are rewriting the rules of what’s possible with rim design. For this new era, the Zipp® 303 Firecrest Tubeless Disc-brake wheelset sets the new standard. With an all-new disc-specific, tubeless rim, the 303 Firecrest Carbon Clincher is now internally 21mm wide and faster than ever. Designed from the start as a tubeless rim, the 303 Firecrest features a rim bed made with internal ridges to lock the tire’s bead in place, ensuring secure performance, even when ridden at lower tire pressures. A new carbon fibre layup keeps weight low while maintaining the 303’s legendary durability. The rim’s lightweight design allows the 303 to glide up the steepest climbs while our robust 77/177D hubset, keep the wheels stiff and responsive.Things To RememberAero, durable, Light weight, Tubeless,77/177 hubset,Thru-axle compatible,. Features And BenefitsFirecrest rim Technology provides world class handling and stability,77/177d hubset, with its best-in-class durability and improved bearing protection, all with no pre-load adjustment needed,Aero performance, durable and Light Weight,To ensure compatibility with any bike, our versatile 77/177D hubs come with swappable end caps to work with QR’s and thru-axles,ISO 4210 compliant.,. SpecificationsSize (wheels): 650B, 700c,Rim construction: Carbon,Tire compatibility: Clincher Tubeless Ready,Brake compatibility: Disc (6-bolt),Rim - inside width: 21mm,Rim profile: Symmetrical,Rim finish: UD fibre, adhesive decals,Colour (Decal): Black, Blue, White,Nipple material: Aluminium,Spoke type: CX-Ray - Black,Spoke count: 24,Spoke pattern: 2 Cross,Axle type (Wheels): Conversion Caps included,Bearings: Cartridge - Carbon Steel,.
If you had to choose just one wheel, the 404 Firecrest Carbon Clincher is a savvy and speedy choice. With a depth and shape proven in all conditions, it’s the all-around performer and the standard by which all other wheels are measured. Its 58mm rim depth is a classic all-around performer that has carried athletes to victory in every kind of event and situation – every triathlon distance, breakaways, field sprints and hilly finishes. This latest iteration of the 404 Firecrest Carbon Clincher is infused with technologies developed in our Indianapolis advanced development lab. The results mean better performance out on the road: More speed, better control, and greater stopping power than its predecessor: More Speed: Revised rim profile for reduced aerodynamic drag developed by our advanced development team in Indianapolis, Indiana, USA. Greater AeroBalance™: ABLC™ Sawtooth™ Technology, a complex dimpling pattern first developed for our top-level NSW wheel lineup. This technology helps to achieve the optimization of low aerodynamic drag and crosswind stability, which we call AeroBalance. Better braking: Zipp’s ShowStopper™ textured braking surface delivers unrivalled rim braking performance in wet or dry conditions. Lighter Weight: The 404 Firecrest Carbon Clincher is 75 grams lighter than its previous iteration.
Sector GCi Carbon Gravel WheelsetWhether you're racing across the mud or simply exploring the countryside gravel roads, this wheelset is engineered for fast and smooth-rolling performance. It features a hard-wearing unidirectional carbon fibre rim construction, which allows you to benefit from its amazing strength without adding any unnecessary grams to your gravel bike. Engineered to excel in high impact environments, this model is equipped with revolutionary TeXtreme Innegra that's integrated into the layup of the rims. This special fibre delivers 75% high impact resistance when compared to standard carbon rims of the same profile. This means you can enjoy high energy rides with superior vibration damping and none of the harsh stiffness associated with carbon.So what is Innegra?Innegra is a fibre derived from polypropylene that exhibits some highly beneficial properties, including high strength-to-weight ratio, resistance to damage, vibration damping and energy dissipation. The TexTreme fabric used in the layup of GCi rim is a Spread Tow fabric built from a hybrid of Innegra and T700 carbon fibres. The Spread Tow layout is significant because it also contributes some positive attributes - the fibres are straighter (reduced crimp therefore higher strength) and it facilitates the use of less resin (lower weight).In the GCi rim the Spread Tow fabric is used on the outer layer of the rim, giving it the unique checkerboard pattern.Sounds good, but what does that mean for a rim? Significantly more compliance...Under a lab test the GCi rim was 50% more vertically compliant than a unidirectional T700 carbon rim of the same profile. This test involves loading the rim with a 100kg weight, in which the GCi rim exhibited a deflection of 15.74mm compared to 10.55mm on the standard T700 rim.It is widely acknowledged that vertical compliance is important for damage reduction (less likely to crack), a reduction of fatigue and to improve traction. Such an improvement in vertical compliance also brings a radically improved ride quality to the GCi wheelset.The Innegra equipped rims do not have the associated harsh stiffness of regular carbon wheels. Significantly more impact resistance...In the lab the GCi rim was able to handle impacts of almost double the standard required for MTB wheels by the UCI. The GCi rim withstood an impact of 140J compared the UCI stipulated requirement of an 80J impact, making it 75% stronger than the UCI requirements. In real world terms, the GCi rim can handle the equivalent of dropping a 15kg weight from a height of up to 1.08 metres onto the bare rim, thus making it 18% stronger than a recognised leading competitor who has published their data. Much less weight...Despite offering strength and compliance advantages, the use of Innegra also allows the construction of an extremely lightweight rim. The Innegra equipped GCi rim weighs just 440g, and Sector's complete wheelset weighs just 1690g.Features: Rim Material: T-700 Unidirectional Carbon Fibre; Outer layer: TeXtreme Plain Weave Spread Tow Carbon Fibre and Innegra S Hybrid Wheel Size: 700c Use: Gravel Spokes / Type: Pillar 1422 Bladed / Straight Pull Nipples: Pillar Black Brass DSN Hub Rotor Fitment: Centrelock Freehub: 6 Pawl (Shimano or SRAM XD options available to select) Hole Count: 24h ERD: 566mm Rim Width: (Internal) 24mm | (External) 31mm Rim Depth: 38mm Tubeless: Yes Single or Pair: Pair End Caps: (Front) 100x12mm / (Rear) 142x12mm Extras: Tubeless Sealant, valves, tape and 15mm end caps Weight: 1690gBuy Sector Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Key Features: Designed to add serious all-conditions aerodynamic advantage in a durable Hybrid-certified package; the HEC 1400's are a superb upgrade for those looking to squeeze every ounce of performance from a high-end E-road bike, The carbon HEC rims were designed from scratch in conjunction with former F1 head of engineering JP Ballard and his team at the GST wind tunnel in Immenstaad, Germany, Using a bespoke fluid dynamic analysis system that for the first time allowed the designers to model and quantify the effect of crosswinds on a wheel's handling a rim profile was developed that gives an optimal balance between aerodynamics and handling, This is why the HEC rim is precisely 47 mm deep and 27 mm wide, any wider and you'd see an unacceptable increase in drag, any deeper and you'd compromise handling in rough conditions, we call this concept Aero+ and the result is a blindingly fast yet truly all conditions E-Road wheel, Reinforced Hybrid optimised SPLINE hub-shells, a strengthened 24-tooth ratchet and steel freehub bodies ensure long term durability even under prolonged hi-torque use, Thicker spokes greatly extend fatigue life and transfer the added torque from the hub more efficiently, 19 mm internal rim profile is optimised for 25-28 c tyres, For those looking to use the latest tyre tech the HEC 1400's come tubeless ready but can also be used with standard clinchers, Available in either standard 100/142 x 12 or 110/148 x 12 'Road BOOST' to fit the latest E-road designs, the Non-Boost versions can be adapted for Q/R using end caps (not included), Maximum recommended system weight: 130 KG, When bought as a pair they will include both Shimano and SRAM XDR steel freehubs, 6-bolt rotor adaptors, tubeless rim tape and valves, Weight: Front 711 grams Rear: 838 grams.
Campagnolo Shamal Ultra DB 2-Way Fit Road WheelsetA lightweight and high-quality wheelset, specially designed to help you achieve a podium finish.Impressively Light and Durable Road WheelsetThe Shamal Ultra DB 2-Way Fit Road Wheelset from Campagnolo is the perfect duo for taking your riding up a notch with a state-of-the-art design and some of the finest technologies that Campagnolo has to offer. The construction is made from robust aluminium that’s lightweight but also tough enough for years of long-lasting use out on the road. Stiff and Responsive Road Bike WheelsThanks to the new road design of the flange, the wheels offer excellent integration with the AFS rotor for better transmission of the braking forces. Whether you’re racing or out for leisure with friends, you will notice just how amazing these wheels perform on the road, from the high-quality components to the aerodynamic design that cuts through the air and past your competitors. LightweightWhen you climb uphill, there’s no excess weight holding you back, which makes it effortless to get ahead. When descending downhill, you’ll have full control over your bike for a smooth riding experience. The Campagnolo Shamal Ultra DB 2-Way Fit Road Wheelset is the perfect choice for keeping you at the top of your game, ride after ride.Features: Material: Aluminium Spokes: F21 spokes with G3 technology Profile Class: C 17 Suitable Tyres: Clincher; Tubeless; Tubeless Ready Entirely hand-assembled by Campagnolo Profile Height: Front: 25/27 - Rear 27/30 Cup-and-cone bearing system Maximum performance and lightweight Weight: 4.5kgManufacturer Reference Codes: Campagnolo Freehub/Black: CP824; Campagnolo Freehub/Dark Label: CPW824DA; Shimano Freehub/Black: CPW824ABuy Campagnolo Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Any offering from Zipp is certain to come with high expectations, and this version of the Zipp 303 S wheelset doesn’t disappoint. With this edition, the wheel building pioneers are touting not only the speed and low weight of their wheels, but also the durability and ability to fit wide tyres, making them suitable for on and off-road exploring. All this at the brand’s lowest price point ever means this is a product offering value for money, as well as high performance. This listing is for a complete wheelset, you can also buy the front and rear wheel separately. Lighter, Stronger, Faster The Zipp 303 S wheelset is intended to be versatile, equally suited to training and racing in a range of conditions. Whether you’re on the silky-smooth tarmac of Majorca, the bone-shaking pavé of Flanders, or the dusty plains of Kansas, these wheels cover them all. Boasting a 45mm-deep rim, coupled with a respectable total weight of 1530 grams, these wheels offer a great balance between aerodynamics and weight, ensuring you have the speed on the flats and the low weight needed for when the road tilts up. As a wheel intended for racing, this product is expectedly stiff, and you’d be hard pressed to notice any lateral flex under those big, decisive accelerations. Additionally, even the most weight conscious can rest assured they won’t be held back on the climbs and that they’re responsive enough for sprint finishes on the road — whether that finish line is a sanctioned road race or the café, it doesn’t matter! Bigger, Wider, Faster Known as pioneers in the wheel-building space, Zipp are on trend in terms of offering wider tyre options. With wider tyres you can run lower air pressures, which can increase comfort and grip in the corners; importantly, this amounts to more speed, particularly across rough terrain. Boasting a broader, hookless rim, the Zipp 303 S wheelset is optimised for a 28mm tyre on the road but will happily take up to 50mm tyres for gravel adventures. Stopping Power It has become almost the norm for wheels to come in disc-brake-only versions, and that’s exactly what you get here. Being equipped with disc brakes means that when you squeeze the brakes — regardless of the conditions — you can be confident you’ll get consistent stopping power. Lifelong Quality Filled with the highest-quality steel bearings, the hubs will run smooth and should stand the test of time. So confident in the durability of the 303 S wheelset, Zipp are offering a lifetime warranty. Product Features Carbon-fibre rims 45mm-rim depth 23mm-internal rim width 27mm-external rim width Optimised for 28mm tyres, but accommodates up to 50mm Hookless rim Only compatible with tubeless tyres Disc brake (centre-lock) compatible 76 / 176 DB hubs with Center locking interface XDR driver body option Through axles — 12x100mm front and 12x142mm rear Sapim CX-Sprint J bend spokes. 24 front and rear. Brass nipples Weight: 1530 grams Lifetime warranty Includes wheelset, tubeless rim tape, tubeless valves, centre lock lock ring