{"title":"Brand | RENNEN","description":null,"products":[{"product_id":"cheminees-couronne-rennen-regular-x4-or","title":"RENNEN Regular Chainring Bolt Nuts (x4) Gold","description":"\u003cp\u003e\u003cb\u003eRennen Infinity chainring nuts\u003c\/b\u003e are the female part of the mounting system: they sit behind the chainring and receive the bolt, clamping and centring the assembly onto the crankset spider. They are essential whenever the chainring is unthreaded.\u003c\/p\u003e\n\u003cp\u003eLike the bolts in the range, they are machined in the USA from \u003cb\u003e7075-T6 aluminium\u003c\/b\u003e on multi-axis CNC lathes, with the same attention paid to load distribution. The gold anodised finish provides the highest contrast in the line-up, standing out particularly well on a black or polished chainring.\u003c\/p\u003e\n\u003cp\u003eThis pack of \u003cb\u003e4 chainring nuts in Regular length (6.2 mm)\u003c\/b\u003e is suitable for 4-bolt chainrings (104 mm BCD) and the vast majority of crankset\/chainring combinations. Note: the nut must always be paired with a bolt of the \u003cb\u003esame length\u003c\/b\u003e — a Regular nut with an XL bolt will not tighten correctly.\u003c\/p\u003e","brand":"RENNEN","offers":[{"title":"Default Title","offer_id":57326912340348,"sku":"PBS_RENN074786","price":15.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/3444\/9318\/files\/imgi_1_cheminees-couronne-rennen-regular-x4.jpg?v=1787214322"},{"product_id":"vis-couronne-rennen-regular-x4-or","title":"RENNEN Regular Chainring Bolts (x4) Gold","description":"\u003cp\u003eThe \u003cb\u003eRennen Infinity chainring bolts\u003c\/b\u003e are the result of obsessive work on one of the most mundane BMX components. Rennen Design Group reports 97 CAD iterations, 22 machining programme variants and numerous finite element simulations to produce this bolt, machined in-house in the United States on a multi-axis CNC lathe from \u003cb\u003e7075-T6 aluminium\u003c\/b\u003e.\u003c\/p\u003e\n\u003cp\u003eTwo design choices set it apart. A \u003cb\u003eshoulder located just below the head\u003c\/b\u003e distributes the load instead of concentrating it on the thread, making it, according to the brand, the strongest 7075 chainring bolt on the market. And where the rest of the market uses a 5 mm hex socket, Rennen chose \u003cb\u003e4 mm\u003c\/b\u003e: less material removed, therefore 8.5% greater strength. Rennen is confident enough in this design to offer a \u003cb\u003elifetime breakage warranty\u003c\/b\u003e: a broken bolt is replaced.\u003c\/p\u003e\n\u003cp\u003eThis pack of \u003cb\u003e4 gold-finish bolts\u003c\/b\u003e is suitable for 4-bolt chainrings (104 mm BCD). The \u003cb\u003eRegular length (6.2 mm)\u003c\/b\u003e is optimised for most crankset\/chainring combinations. Fitted using 4 and 8 mm Allen keys.\u003c\/p\u003e","brand":"RENNEN","offers":[{"title":"Default Title","offer_id":57326912536956,"sku":"PBS_RENN074794","price":15.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/3444\/9318\/files\/17087.jpg?v=1787213374"},{"product_id":"vis-couronne-rennen-xl-x4-or","title":"RENNEN XL Chainring Bolts (x4) Gold","description":"\u003cp\u003eThe \u003cb\u003eRennen Infinity chainring bolts\u003c\/b\u003e are the result of obsessive work on one of the most mundane BMX components. Rennen Design Group reports 97 CAD iterations, 22 machining programme variants and numerous finite element simulations to produce this bolt, machined in-house in the United States on a multi-axis CNC lathe from \u003cb\u003e7075-T6 aluminium\u003c\/b\u003e.\u003c\/p\u003e\n\u003cp\u003eTwo design choices set it apart. A \u003cb\u003eshoulder located just below the head\u003c\/b\u003e distributes the load instead of concentrating it on the thread, making it, according to the brand, the strongest 7075 chainring bolt on the market. And where the rest of the market uses a 5 mm hex socket, Rennen chose \u003cb\u003e4 mm\u003c\/b\u003e: less material removed, therefore 8.5% greater strength. Rennen is confident enough in this design to offer a \u003cb\u003elifetime breakage warranty\u003c\/b\u003e: a broken bolt is replaced.\u003c\/p\u003e\n\u003cp\u003eThis is the \u003cb\u003eXL version, 9 mm long\u003c\/b\u003e, compared with 6.2 mm for the Regular version. It is specifically designed for \u003cb\u003ethick crank spiders\u003c\/b\u003e, such as the Answer Accelerator, where a standard-length bolt does not provide enough engagement. Pack of 4 gold-finish bolts for 4-bolt chainrings (104 mm BCD), fitted using 4 and 8 mm Allen keys.\u003c\/p\u003e","brand":"RENNEN","offers":[{"title":"Default Title","offer_id":57326913421692,"sku":"PBS_RENN074790","price":15.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/3444\/9318\/files\/17101.jpg?v=1787213287"},{"product_id":"cheminees-couronne-rennen-xl-x4","title":"RENNEN XL Chainring Nuts (x4)","description":"\u003cp\u003e\u003cb\u003eRennen Infinity chainring nuts\u003c\/b\u003e make up the female half of the fastening system: fitted behind the chainring to receive the bolt, ensuring the assembly is securely tightened and centred on the crank spider. They are essential whenever the chainring is not threaded.\u003c\/p\u003e\n\u003cp\u003eLike the bolts in the range, they are CNC-machined in the USA on multi-axis lathes from \u003cb\u003e7075-T6 aluminium\u003c\/b\u003e, with the same attention given to stress distribution.\u003c\/p\u003e\n\u003cp\u003eThis is the \u003cb\u003eXL length, measuring 9 mm\u003c\/b\u003e compared to 6.2 mm for the Regular version. It is specifically designed for \u003cb\u003ethick crank spiders\u003c\/b\u003e such as the Answer Accelerator, where standard-length nuts do not provide enough thread engagement for secure tightening. Pack of 4 nuts for 4-bolt chainrings (104 mm BCD). Please note: the nut must be paired with a bolt of the \u003cb\u003esame length\u003c\/b\u003e — an XL nut with a Regular bolt will not tighten properly.\u003c\/p\u003e","brand":"RENNEN","offers":[{"title":"Default Title","offer_id":57326913454460,"sku":"PBS_RENN074784","price":15.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/3444\/9318\/files\/imgi_1_cheminees-couronne-rennen-xl-x4.jpg?v=1787214506"},{"product_id":"cheminees-couronne-rennen-regular-x5","title":"RENNEN Regular Chainring Bolt Nuts (x5)","description":"\u003cp\u003e\u003cb\u003eRennen Infinity chainring nuts\u003c\/b\u003e are the female part of the mounting system: they sit behind the chainring and receive the bolt, clamping and centring the assembly onto the crankset spider. They are essential whenever the chainring is unthreaded.\u003c\/p\u003e\n\u003cp\u003eLike the bolts in the range, they are machined in the USA from \u003cb\u003e7075-T6 aluminium\u003c\/b\u003e on multi-axis CNC lathes, with the same attention paid to load distribution.\u003c\/p\u003e\n\u003cp\u003eThis pack of \u003cb\u003e5 chainring nuts in Regular length (6.2 mm)\u003c\/b\u003e is designed for \u003cb\u003e5-bolt chainrings (110 mm BCD)\u003c\/b\u003e, the classic BMX Race standard found on many spiders, including older generations. Note: the nut must always be paired with a bolt of the \u003cb\u003esame length\u003c\/b\u003e — a Regular nut with an XL bolt will not tighten correctly.\u003c\/p\u003e","brand":"RENNEN","offers":[{"title":"Default Title","offer_id":57326914142588,"sku":"PBS_RENN074785","price":19.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/3444\/9318\/files\/imgi_1_cheminees-couronne-rennen-regular-x5.jpg?v=1787214407"},{"product_id":"cheminees-couronne-rennen-titanium-regular-x4","title":"RENNEN Titanium Regular Chainring Nuts (x4)","description":"\u003cp\u003e\u003cb\u003eRennen Infinity chainring nuts\u003c\/b\u003e make up the female half of the fastening system: fitted behind the chainring to receive the bolt, ensuring the assembly is securely tightened and centred on the crank spider. They are essential whenever the chainring is not threaded.\u003c\/p\u003e\n\u003cp\u003eThis premium version is CNC-machined from \u003cb\u003e6AL-4V titanium\u003c\/b\u003e, an alloy significantly tougher than 7075 aluminium and completely corrosion-proof. This is especially valuable on chainring nuts, which remain in place for long periods and are only removed when changing chainrings. The pack includes a \u003cb\u003esingle-use pouch of Finish Line Ti-Prep anti-seize paste\u003c\/b\u003e, essential for titanium hardware to prevent thread galling.\u003c\/p\u003e\n\u003cp\u003eThis pack of \u003cb\u003e4 chainring nuts in Regular length (6.2 mm)\u003c\/b\u003e is designed for \u003cb\u003e4-bolt chainrings (104 mm BCD)\u003c\/b\u003e and fits most crank\/chainring combinations. Please note: the nut must be paired with a bolt of the \u003cb\u003esame length\u003c\/b\u003e — a Regular nut with an XL bolt will not tighten properly.\u003c\/p\u003e","brand":"RENNEN","offers":[{"title":"Default Title","offer_id":57326914175356,"sku":"PBS_RENN074783","price":31.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/3444\/9318\/files\/17138.jpg?v=1787214029"},{"product_id":"couronne-rennen-4-vis-non-filetee","title":"RENNEN 4-Bolt Non-Threaded Chainring","description":"\u003cp\u003eThe \u003cb\u003eRennen 4-bolt non-threaded chainring\u003c\/b\u003e is the standard version of the flagship model from American manufacturer \u003cb\u003eRennen Design Group\u003c\/b\u003e, CNC machined in the USA from \u003cb\u003eaerospace-grade 7075-T6 aluminium\u003c\/b\u003e — an alloy rated 83% stronger than the 6061 aluminium used on entry-level chainrings.\u003c\/p\u003e\n\u003cp\u003eWith a thickness of \u003cb\u003e3\/16\" (approx. 4.8 mm)\u003c\/b\u003e and a weight of \u003cb\u003e79 g in 38T\u003c\/b\u003e, it is among the lightest chainrings on the market. Its dedicated \u003ci\u003esingle speed\u003c\/i\u003e tooth profile has been designed to extend tooth life, a detail often overlooked on machined chainrings.\u003c\/p\u003e\n\u003cp\u003eThis is the version offering the \u003cb\u003ewidest range of tooth counts\u003c\/b\u003e, from 38 to 52 teeth: perfect for equipping a youth setup as well as a Cruiser with a high gear ratio. Non-threaded bolt holes: make sure to provide a chainring bolt and nut set suited to your crank arm thickness.\u003c\/p\u003e","brand":"RENNEN","offers":[{"title":"38","offer_id":57326914896252,"sku":"PBS_RENN074808","price":61.99,"currency_code":"EUR","in_stock":true},{"title":"39","offer_id":57326914863484,"sku":"PBS_RENN074807","price":61.99,"currency_code":"EUR","in_stock":false},{"title":"43","offer_id":57326914830716,"sku":"PBS_RENN074806","price":61.99,"currency_code":"EUR","in_stock":true},{"title":"47","offer_id":57326914797948,"sku":"PBS_RENN074805","price":61.99,"currency_code":"EUR","in_stock":true},{"title":"48","offer_id":57326914765180,"sku":"PBS_RENN074804","price":61.99,"currency_code":"EUR","in_stock":false},{"title":"50","offer_id":57326914732412,"sku":"PBS_RENN074803","price":61.99,"currency_code":"EUR","in_stock":false},{"title":"52","offer_id":57326914699644,"sku":"PBS_RENN074802","price":61.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/3444\/9318\/files\/21141.jpg?v=1787210692"},{"product_id":"couronne-decimale-rennen-4-vis-non-filetee","title":"RENNEN 4-Bolt Non-Threaded Decimal Chainring","description":"\u003cp\u003eThe \u003cb\u003eRennen 4-bolt non-threaded decimal chainring\u003c\/b\u003e addresses a well-known issue among BMX Race riders: going from one tooth count to the next changes the rollout by a full step, which is often too much for fine-tuning. Rennen Design Group has therefore developed intermediate tooth counts that allow riders to fine-tune their gearing by half-steps.\u003c\/p\u003e\n\u003cp\u003eThis is the most extensive range in the line-up, with \u003cb\u003eten decimal tooth counts from 41.2 to 50.2\u003c\/b\u003e. It covers two distinct setups: from 41.2 to 44.7 for standard 20-inch gearings, and from 48.8 to 50.2 for Cruiser setups running big gears. A rider who finds 42T too easy and 43T too hard now has intermediate options — a critical adjustment at the start gate, where everything is decided in the first few pedal strokes.\u003c\/p\u003e\n\u003cp\u003eThe construction features Rennen's signature know-how: \u003cb\u003e7075-T6 aluminium\u003c\/b\u003e CNC machined in the USA (rated 83% stronger than 6061), a thickness of \u003cb\u003e3\/16\" (approx. 4.8 mm)\u003c\/b\u003e, a weight of \u003cb\u003e79 g in 38T\u003c\/b\u003e, and a dedicated \u003ci\u003esingle speed\u003c\/i\u003e tooth profile engineered to extend tooth life. Non-threaded bolt holes: ensure you have a suitable chainring bolt and nut set.\u003c\/p\u003e","brand":"RENNEN","offers":[{"title":"41.2","offer_id":57326915453308,"sku":"PBS_RENN074780","price":61.99,"currency_code":"EUR","in_stock":true},{"title":"41.7","offer_id":57326915420540,"sku":"PBS_RENN074779","price":61.99,"currency_code":"EUR","in_stock":true},{"title":"42.2","offer_id":57326915387772,"sku":"PBS_RENN074778","price":61.99,"currency_code":"EUR","in_stock":true},{"title":"42.7","offer_id":57326915355004,"sku":"PBS_RENN074777","price":61.99,"currency_code":"EUR","in_stock":true},{"title":"44.2","offer_id":57326915322236,"sku":"PBS_RENN074776","price":61.99,"currency_code":"EUR","in_stock":true},{"title":"44.7","offer_id":57326915289468,"sku":"PBS_RENN074775","price":61.99,"currency_code":"EUR","in_stock":true},{"title":"48.8","offer_id":57326915256700,"sku":"PBS_RENN074774","price":61.99,"currency_code":"EUR","in_stock":true},{"title":"49.2","offer_id":57326915223932,"sku":"PBS_RENN074773","price":61.99,"currency_code":"EUR","in_stock":true},{"title":"49.8","offer_id":57326915191164,"sku":"PBS_RENN074772","price":61.99,"currency_code":"EUR","in_stock":true},{"title":"50.2","offer_id":57326915158396,"sku":"PBS_RENN074771","price":61.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/3444\/9318\/files\/21141_eadfec4e-e4b3-46ed-b26c-049c86df24c5.jpg?v=1787211946"},{"product_id":"vis-couronne-rennen-xl-x4-bleu","title":"RENNEN XL Chainring Bolts (x4) Blue","description":"\u003cp\u003eThe \u003cb\u003eRennen Infinity chainring bolts\u003c\/b\u003e are the result of obsessive work on one of the most mundane BMX components. Rennen Design Group reports 97 CAD iterations, 22 machining programme variants and numerous finite element simulations to produce this bolt, machined in-house in the United States on a multi-axis CNC lathe from \u003cb\u003e7075-T6 aluminium\u003c\/b\u003e.\u003c\/p\u003e\n\u003cp\u003eTwo design choices set it apart. A \u003cb\u003eshoulder located just below the head\u003c\/b\u003e distributes the load instead of concentrating it on the thread, making it, according to the brand, the strongest 7075 chainring bolt on the market. And where the rest of the market uses a 5 mm hex socket, Rennen chose \u003cb\u003e4 mm\u003c\/b\u003e: less material removed, therefore 8.5% greater strength. Rennen is confident enough in this design to offer a \u003cb\u003elifetime breakage warranty\u003c\/b\u003e: a broken bolt is replaced.\u003c\/p\u003e\n\u003cp\u003eThis is the \u003cb\u003eXL version, 9 mm long\u003c\/b\u003e, compared with 6.2 mm for the Regular version. It is specifically designed for \u003cb\u003ethick crank spiders\u003c\/b\u003e, such as the Answer Accelerator, where a standard-length bolt does not provide enough engagement. Pack of 4 blue bolts for 4-bolt chainrings (104 mm BCD), fitted using 4 and 8 mm Allen keys.\u003c\/p\u003e","brand":"RENNEN","offers":[{"title":"Default Title","offer_id":57326914666876,"sku":"PBS_RENN074791","price":15.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/3444\/9318\/files\/17100.jpg?v=1787213144"},{"product_id":"vis-couronne-rennen-xl-x4-noir","title":"RENNEN XL Chainring Bolts (x4) Black","description":"\u003cp\u003eThe \u003cb\u003eRennen Infinity chainring bolts\u003c\/b\u003e are the result of obsessive work on one of the most mundane BMX components. Rennen Design Group reports 97 CAD iterations, 22 machining programme variants and numerous finite element simulations to produce this bolt, machined in-house in the United States on a multi-axis CNC lathe from \u003cb\u003e7075-T6 aluminium\u003c\/b\u003e.\u003c\/p\u003e\n\u003cp\u003eTwo design choices set it apart. A \u003cb\u003eshoulder located just below the head\u003c\/b\u003e distributes the load instead of concentrating it on the thread, making it, according to the brand, the strongest 7075 chainring bolt on the market. And where the rest of the market uses a 5 mm hex socket, Rennen chose \u003cb\u003e4 mm\u003c\/b\u003e: less material removed, therefore 8.5% greater strength. Rennen is confident enough in this design to offer a \u003cb\u003elifetime breakage warranty\u003c\/b\u003e: a broken bolt is replaced.\u003c\/p\u003e\n\u003cp\u003eThis is the \u003cb\u003eXL version, 9 mm long\u003c\/b\u003e, compared with 6.2 mm for the Regular. It is specifically intended for \u003cb\u003ethick crank spiders\u003c\/b\u003e, such as the Answer Accelerator, where a standard-length bolt does not provide enough engagement. Pack of 4 black bolts for 4-bolt chainrings (104 mm BCD), fitted with 4 and 8 mm Allen keys.\u003c\/p\u003e","brand":"RENNEN","offers":[{"title":"Default Title","offer_id":57326915551612,"sku":"PBS_RENN074792","price":15.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/3444\/9318\/files\/17098.jpg?v=1787213108"},{"product_id":"couronne-decimale-rennen-4-vis-filetee","title":"RENNEN 4-Bolt Threaded Decimal Chainring","description":"\u003cp\u003eThe \u003cb\u003eRennen 4-bolt threaded decimal chainring\u003c\/b\u003e solves a well-known issue for BMX Race riders: changing by one full tooth shifts the gear development by a whole step, which is often too much for fine-tuning your \u003ci\u003erollout\u003c\/i\u003e. Rennen Design Group therefore developed intermediate tooth counts — here \u003cb\u003e42.2 \/ 42.7 \/ 43.2 \/ 43.7 teeth\u003c\/b\u003e — allowing you to fine-tune your gearing in half-steps.\u003c\/p\u003e\n\u003cp\u003eIn practice, a rider who finds a 42-tooth ring too short and a 43-tooth too tall gets two extra gear options in between. Out of the starting gate, where everything is decided in the first few pedal strokes, that fine adjustment really counts.\u003c\/p\u003e\n\u003cp\u003eThe construction features Rennen's signature expertise: \u003cb\u003e7075-T6 aluminium\u003c\/b\u003e CNC-machined in the USA (rated 83% stronger than 6061), \u003cb\u003e3\/16\" thickness (approx. 4.8 mm)\u003c\/b\u003e, and a dedicated \u003ci\u003esingle speed\u003c\/i\u003e tooth profile. The \u003cb\u003eintegrated threads\u003c\/b\u003e eliminate the need for chainring nuts and chainring spanners: the bolt screws directly into the machined threads for a precise, wobble-free fit. 104 mm BCD, compatible with 8 and 9-speed chains.\u003c\/p\u003e","brand":"RENNEN","offers":[{"title":"42.2","offer_id":57326916469116,"sku":"PBS_RENN074770","price":64.99,"currency_code":"EUR","in_stock":false},{"title":"42.7","offer_id":57326916436348,"sku":"PBS_RENN074769","price":64.99,"currency_code":"EUR","in_stock":true},{"title":"43.2","offer_id":57326916403580,"sku":"PBS_RENN074768","price":64.99,"currency_code":"EUR","in_stock":false},{"title":"43.7","offer_id":57326916370812,"sku":"PBS_RENN074767","price":64.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/3444\/9318\/files\/35519.jpg?v=1787210653"},{"product_id":"cheminees-couronne-rennen-regular-x4-rouge","title":"RENNEN Regular Chainring Nuts (x4) Red","description":"\u003cp\u003e\u003cb\u003eRennen Infinity chainring nuts\u003c\/b\u003e make up the female half of the fastening system: fitted behind the chainring to receive the bolt, ensuring the assembly is securely tightened and centred on the crank spider. They are essential whenever the chainring is not threaded.\u003c\/p\u003e\n\u003cp\u003eLike the bolts in the range, they are CNC-machined in the USA on multi-axis lathes from \u003cb\u003e7075-T6 aluminium\u003c\/b\u003e, with the same attention given to stress distribution. The red anodised finish lets you match your hardware to the rest of your build or add a splash of colour to a black chainring.\u003c\/p\u003e\n\u003cp\u003eThis pack of \u003cb\u003e4 chainring nuts in Regular length (6.2 mm)\u003c\/b\u003e is suitable for 4-bolt chainrings (104 mm BCD) and the vast majority of crank\/chainring combinations. Please note: the nut must be paired with a bolt of the \u003cb\u003esame length\u003c\/b\u003e — a Regular nut with an XL bolt will not tighten properly.\u003c\/p\u003e","brand":"RENNEN","offers":[{"title":"Default Title","offer_id":57326917091708,"sku":"PBS_RENN074788","price":15.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/3444\/9318\/files\/imgi_1_cheminees-couronne-rennen-regular-x4_bcf8d68e-197b-4f31-b87c-0ef6d57c7fa9.jpg?v=1787214353"},{"product_id":"couronne-rennen-4-vis-filetee","title":"RENNEN 4-Bolt Threaded Chainring","description":"\u003cp\u003eThe \u003cb\u003eRennen 4-bolt threaded chainring\u003c\/b\u003e is the flagship model from American manufacturer \u003cb\u003eRennen Design Group\u003c\/b\u003e, CNC machined in the USA from \u003cb\u003eaerospace-grade 7075-T6 aluminium\u003c\/b\u003e — an alloy rated 83% stronger than the 6061 aluminium used on entry-level chainrings.\u003c\/p\u003e\n\u003cp\u003eIts key feature is its \u003cb\u003eintegrated thread\u003c\/b\u003e: the threads are machined directly into the body of the chainring, eliminating the need for chainring nuts and a chainring nut wrench. You simply screw the chainring bolt straight into the thread. Rennen was the first to offer this design, initially in 110 mm and then on its 104 mm models: it improves mounting accuracy and ensures almost zero runout.\u003c\/p\u003e\n\u003cp\u003eWith a thickness of \u003cb\u003e3\/16\" (approx. 4.8 mm)\u003c\/b\u003e and a weight of \u003cb\u003e79 g in 38T\u003c\/b\u003e, it is among the lightest chainrings on the market. Its dedicated \u003ci\u003esingle speed\u003c\/i\u003e tooth profile has been designed to extend tooth life. 104 mm BCD, compatible with 8- and 9-speed chains.\u003c\/p\u003e","brand":"RENNEN","offers":[{"title":"41","offer_id":57326917321084,"sku":"PBS_RENN074801","price":64.99,"currency_code":"EUR","in_stock":true},{"title":"42","offer_id":57326917288316,"sku":"PBS_RENN074800","price":64.99,"currency_code":"EUR","in_stock":true},{"title":"43","offer_id":57326917255548,"sku":"PBS_RENN074799","price":64.99,"currency_code":"EUR","in_stock":true},{"title":"44","offer_id":57326917222780,"sku":"PBS_RENN074798","price":64.99,"currency_code":"EUR","in_stock":false},{"title":"45","offer_id":57326917190012,"sku":"PBS_RENN074797","price":64.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/3444\/9318\/files\/16918.jpg?v=1787210169"}],"url":"https:\/\/probikeshop-irl.com\/collections\/brand-rennen.oembed","provider":"Probikeshop","version":"1.0","type":"link"}