The components of a bicycle responsible for shifting, drivetrain, and braking are generally referred to collectively as the drivetrain bicycle groupset. This includes: front derailleur (front shifter), rear derailleur (rear shifter), shifters (for mountain bikes: twist grip, trigger shifter, or dual-control handlebar levers; for road bikes: STI integrated brake/shift levers and trigger shifters), front chainrings (crankset), rear sprockets (cassette), chain, hubs, brakes, and various associated cables and housing for shifting and braking systems.

In the mainstream market, most mid-to-high-end bicycles adopt brands such as Shimano and SRAM, which are highly reliable in terms of performance and quality. However, the domestic Blueprint shifting system mainly targets the low-end bicycle market, and its performance is relatively weaker compared to Shimano and SRAM.

1、禧玛诺（SHIMANO）

1) Introduction to the SHIMANO brand: SHIMANO is a Japanese brand that holds over 50% of the domestic shift mechanism accessory market. Its product range is extensive, covering low, medium, and high-end segments. Almost everyone who enjoys cars knows about SHIMANO.

SHIMANO is the founding company of the gear shifters. They have achieved the pinnacle in the design of gear shifters. On all high-end sports bicycles around the world, the components produced by Shimano maintain an absolute leading position with the highest market share. Shimano’s products cover shifting, transmission and braking systems, and they have their own unique naming conventions.

Our shimano brake : https://www.eastorly.cn/product/shimano-mt200-1-pair-hydraulic-disc-mountain-bike-brake/

2）SHIMANO groupset level

The ranking of the Schiemann kits from highest to lowest is as follows (arranged in descending order based on product positioning, performance and price):

XTR, DEORE XT, SLX, DEORE LX, DEORE, ALIVIO, ACERA, ALTUS, TOURNEY, TourneyTZ, SIS, MF, ZEE, Saint,bike groupset etc. (1) Competition-level (top, sub-top) Competition-level: XTR, DEORE XT: The most top-level racing parts. XTR strives for extreme lightness and uses more lightweight materials, aiming for extreme lightness and precision. The price is also “top-level”. Deore XT: This is the sub-top series. Like XTR, Deore XT is precise and easy to use, but it is slightly heavier than XTR. There are more metal materials in XT, making it more durable. SLX is between Deore XT and Deore LX. (2) High-end suitable for mountain biking: Deore LX, Deore, Deore: A more economical choice, with slightly inferior performance compared to competition-level XTR and DEORE XT, but still above a high standard. These are common accessories for high-end complete bikes. Both these products are also very durable. Deore and above (XTR, DEORE XT, DEORE LX, DEORE) belong to high-level accessories, capable of handling real mountain biking activities. (3) Intermediate suitable for mountain biking: XC (off-road mountain bike) upgrade ALTUS, Acera, Alivio: Entry-level accessories for mountain sports, suitable for low-intensity mountain sports and entertainment. ALTUS: Entry-level accessory, suitable for urban commuting and entertainment or light mountain areas, but be careful!!! Do not attempt to challenge overly “exciting” road conditions. (4) Low-level urban leisure bikes and low-end XC: Tourney, TourneyTZ. Tourney, TourneyTZ: Civilian-level accessories, suitable for commuting and leisure in the city. After all, the performance and price of the Tourney series are here, so don’t make it struggle to meet your higher demands!

(6) Other models: Zee (lying between XT and SLX, applicable to heavy-duty XC and AM); Saint (lying between XTR and XT, applicable to DH and FR); DXR, Capreo: applicable to BMX

2、速联（SRAM）

1) SRAM brand introduction Speedlink (English: SRAM Corporation, abbreviated as SRAM) is a privately-owned bicycle component manufacturer. Its headquarters is located in Chicago and it was founded in 1987. The company has become one of the largest high-end bicycle component brands in the world through mergers and acquisitions, selling under brands such as SRAM, Avid, RockShox, Truvativ, Quarq, and Zipp. SRAM is an American brand and has always been a fierce competitor of the SHIMANO brand. SHIMANO has occupied the Chinese market for many years, while SRAM is slightly superior in terms of cost performance, for example, the SRAM-7.0 shifting system is designed for Shimano-XT, but the price is much lower. SRAM has the SRAM shifting system series, the ROCK SHOX fork series, the AVID brake series, etc. SRAM is the pioneer of shifters, with shifters production being the main focus. Due to the rear pull wire ratio being 1:1, the chain tensioning force is greater than that of SHIMANO, and the requirements for the line tube are also lower, which can tolerate greater tube wear. Its shifting efficiency is high and durability is strong! (2) SRAM kit levels The SRAM kit levels are ranked from high to low as follows (arranged from high product positioning, performance and price): XX1 (XX1 Eagle AXS, XX1 Eagle, XX1) X01 (X01 Eagle AXS, X01 Eagle, X01) EX1GX (GX Eagle AXS, GX Eagle, GX, GXDH) NX (NX, NXEagle) SX (SX Eagle)

3、蓝图（L-twoo）

The blueprint is a domestic transmission. In terms of performance, it is slightly inferior to Speedlink and Schmalz. Some of the products of Blueprint can be used interchangeably with Schmalz and Speedlink. It has strong compatibility and a high cost-performance ratio. However, there is still much room for improvement. Firstly, it would be better if it were equipped with damping. Secondly, producing dedicated gears for Blueprint to prevent gear clearance problems would be beneficial.