svb3tech

Kids dream MTB race bike for inspiration for 12y boy. Maybe this post will be helpful for somebody who wants to play with build-up of bike from scratch and be different (definitely go for it!) We started races on build bike wheels 24" size - old Garry Fisher (trek procaliber) frame: https://www.youtube.com/watch?v=ucQjPj9ZsCA Later we directly jump into 27,5" size - Superior Team - 27,5" https://www.youtube.com/watch?v=zCvQTnOHa2o , There we struggle with dropping chain. Chain guide did not help, neither upper or lower guide. The only solution was to exchange NW ring, including cranks and bottom bracket. But we decided to build-up new based on china frame bike for 35kg weight young MTB racer. Now (after a year of riding competitions, jumps, drops, roots, rock-gardens and single-tracks) I know it was the right decision. It took me a week to order carbon parts from china (frame, fork, seatpost, seat, handlebars) - to choose the right ones, then in one month all parts were delivered. Almost 50% of components are from china, the rest of components are secondhand stuff, just small parts of components were new, like shifting, chain, tires. The total weight was around 8,3kg later then we decrease it to 7,6kg... now with front suspension RockShox SID Ultimate SL the weight is about 8,5kg. See how the boy enjoy riding this bike https://www.youtube.com/watch?v=MJHlW-ujQz4&t=79s Brand: Custom Home Build - Carbon, 2021 Weight: 8.5kg Size: S-15 Frame: THRUST - carbon china, 1247g Fork: ROCK SHOX SID Ultimate SL - 100mm, 1230g Cranks: SRAM XX1, carbon - bazar, 537g Bottom bracket: CHRIS KING- ThreadFit bazar, 89g Rear derailleur: SHIMANO DEORE XT RD-M8000 SGS 11sp., 274g Shifter: SHIMANO XTR SL-M9000 11sp. - bazar-new, 132g Chainring: GOLOIX - 32 alu - china, 65g Cassette: GARBARUK - 11-46 - bazar, 310g Chain: KMC X12 Ti-N Chain - 12-speed - gold Breaks: SHIMANO XTR BR-M9100 XC Race - bazar, disc floating china, 85g Brake Levers: SHIMANO XTR BL-M9100 XC Race Front wheel: GIANT TRX 0 - carbon, bazar, 701g Rear wheel: DT SWISS XM 1501 SPLINE ONE Boost, bazar, 862g Pedals: SHIMANO - PD-M8100, 340g Handlebar: TOSEEK - carbon china, 126g Stem: SHIKRA 35mm - alu china 85g, Ti bolts 6g Seatpost: TOSEEK - carbon china, 209g Saddle: TOSEEK - carbon china, 105g Tires: CONTINENTAL - front Race King 27,5 x 2.1 - 562g, rear Cross King 27,5 x 2.1 - 591g