# Definitive Parts List **URL:** \ **Category:** Yo-Yo Mods and Maintenance\ **Created:** [January 23, 2024, 2:49pm UTC](https://forums.yoyoexpert.com/t/definitive-parts-list/392729 "2024-01-23T14:49:45Z")\ **Posts on this page:** 1\ **Showing post:** 24
**Author:** ![Overtinkering](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/overtinkering/32/663225_2.png) [@Overtinkering](https://forums.yoyoexpert.com/u/Overtinkering)\ **Post date:** [May 20, 2026, 1:15pm UTC](https://forums.yoyoexpert.com/t/definitive-parts-list/392729/24 "2026-05-20T13:15:15Z")
Hello Went over the list updated a few links (that broke) and added a few things to keep this definitive parts list growing and alive. **BEARINGS** **MR85:** - Aluminum - [https://www.mcmaster.com/94669A034/](https://www.mcmaster.com/94669A034/) - Thick - [MR85 Extra Thicc aka Flying Lemon Bearings | Return Bottoms](https://www.returnbottoms.com/product/mr85-extra-thicc-aka-flying-lemon-bearings) - Greased - [MR85 Rubber Shield Bearings | Return Bottoms](https://www.returnbottoms.com/product/mr85-rubber-shield-bearings) - Delrin - [https://www.returnbottoms.com/product/delrin-mr85-blank](https://www.returnbottoms.com/product/delrin-mr85-blank) - 3D Print - [https://www.printables.com/model/1148407-mr85-yo-yo-bearing-blank](https://www.printables.com/model/1148407-mr85-yo-yo-bearing-blank) **Size A:** - Aluminum - [https://www.mcmaster.com/94669A071/](https://www.mcmaster.com/94669A071/) - Ultem - [https://www.returnbottoms.com/product/ultem-a-bearing-blank](https://www.returnbottoms.com/product/ultem-a-bearing-blank) - 3D Print - [https://www.printables.com/model/1148468-yo-yo-bearing-blank-size-a/files](https://www.printables.com/model/1148468-yo-yo-bearing-blank-size-a/files) **Size B:** - Bearing - lock kit [https://www.layerinfinity.com/product/kasm-bearing-parts-kit](https://www.layerinfinity.com/product/kasm-bearing-parts-kit) **Size C:** **Standard** - Ultem - [https://www.returnbottoms.com/product/ultem-34-spec-bearing-blank](https://www.returnbottoms.com/product/ultem-34-spec-bearing-blank) - Aluminum - [https://yoyoexpert.com/products/luftverk-fixed-axle-bearing-blank](https://yoyoexpert.com/products/luftverk-fixed-axle-bearing-blank) - Aluminum - [https://www.mcmaster.com/92510A761/](https://www.mcmaster.com/92510A761/) **Narrow (half-spec)** - Aluminum: [https://www.mcmaster.com/92510A760/](https://www.mcmaster.com/92510A760/) · Ultem: [https://www.returnbottoms.com/product/half-spec-c-delrin-bearing-blank](https://www.returnbottoms.com/product/half-spec-c-delrin-bearing-blank) **Three Quarter Spec** · 3D Print - [https://www.printables.com/model/1148520-yo-yo-bearing-blank-size-c-three-quarter-spec](https://www.printables.com/model/1148520-yo-yo-bearing-blank-size-c-three-quarter-spec) - Aluminum - [https://zgrt.ca/products/fixed-c-bearing-1-8-3-15-mm-wide?variant=43326302716054](https://zgrt.ca/products/fixed-c-bearing-1-8-3-15-mm-wide?variant=43326302716054) **Size D:** - Delrin: [https://www.returnbottoms.com/product/delrin-4-mm-wide-d-bearing-blank](https://www.returnbottoms.com/product/delrin-4-mm-wide-d-bearing-blank) - Center Track - [https://zgrt.ca/products/fixed-d-bearing-3-mm-wide?variant=41575500120214](https://zgrt.ca/products/fixed-d-bearing-3-mm-wide?variant=41575500120214) **Wooden Alternatives:** - Ultem - No Jive Axle - [https://www.returnbottoms.com/product/ultem-no-jive-axle](https://www.returnbottoms.com/product/ultem-no-jive-axle) - 3D Print – Proyo - [https://www.printables.com/model/1455374-proyo-axles-v2](https://www.printables.com/model/1455374-proyo-axles-v2) - 3D Print -Spintastics - [https://www.printables.com/model/1518687-spintastics-axle-sleeve](https://www.printables.com/model/1518687-spintastics-axle-sleeve) - 3D Print -TMBR Axle - [The Definitive Guide To TryCatchThrow@'s Replacement TMBR Axles](https://forums.yoyoexpert.com/t/the-definitive-guide-to-trycatchthrow-s-replacement-tmbr-axles/402822) [Yo-Yo Mods and Maintenance](https://forums.yoyoexpert.com/c/yo-yo-modification-and-maintenance/12) _Note: We found wooden blanks for standard bearings often cracked from tightening the yoyo, alternative materials are preferred_ _----------------------_ **Axles** - Size List Reference List - [https://forums.yoyoexpert.com/t/common-yoyo-axle-sizes/18437](https://forums.yoyoexpert.com/t/common-yoyo-axle-sizes/18437) **Axle Repair** - Helicoils – M4 - [https://www.mcmaster.com/products/helicoils/thread-pitch~0-7-mm/?s=4mm+x+.7mm+helicoil](https://www.mcmaster.com/products/helicoils/thread-pitch~0-7-mm/?s=4mm+x+.7mm+helicoil) - Helicoils – More Sizes to be added as discovered **Misc Part** - · Wood Worker Kit - [https://www.penblanks.ca/instructions/english/PKYOYOC-Yoyo.pdf](https://www.penblanks.ca/instructions/english/PKYOYOC-Yoyo.pdf) **Tools** - MR85, A, D & C Bearing Removal Tool [https://zgrt.ca/products/d-c-bearing-removal-tool?variant=42994091294870](https://zgrt.ca/products/d-c-bearing-removal-tool?variant=42994091294870) - Bearing Flicker [https://www.layerinfinity.com/product/bearing-flicker-tool](https://www.layerinfinity.com/product/bearing-flicker-tool) 3D Printer Threaded Inserts - [https://www.amazon.com/dp/B08Z88ZQNX/ref=cm\_sw\_r\_cp\_api\_i\_MGS56THA4GF3ECVPY378?\_encoding=UTF8&th=1](https://www.amazon.com/dp/B08Z88ZQNX/ref=cm_sw_r_cp_api_i_MGS56THA4GF3ECVPY378?_encoding=UTF8&th=1) Archive Guides - [https://forums.yoyoexpert.com/t/useful-modification-maintenance-guides-clean-repair-tune-fix-yoyos/16461](https://forums.yoyoexpert.com/t/useful-modification-maintenance-guides-clean-repair-tune-fix-yoyos/16461) --- _[View the full topic](https://forums.yoyoexpert.com/t/definitive-parts-list/392729)._