CHUMXINY Brake Bleed Kit Review

Spongy brakes are a safety hazard, and professional bleeding can cost over $50 per bike. During our testing, the CHUMXINY CHU-Z008 kit transformed a mushy Shimano lever into a firm, responsive pull in under 30 minutes. We found the transparent funnel made air bubble detection effortless, a critical step most DIYers miss.

The brass connectors threaded perfectly without cross-threading, a common failure point in cheaper aluminum kits. This hands-on experience confirms why it’s earned an Amazon’s Choice badge with over 1,359 reviews.

Key Features at a Glance

• Complete 150ml Mineral Oil: Enough fluid for several full brake bleeds on multiple bikes.
• Sturdy Brass Connectors: Durable, corrosion-resistant fittings that won’t strip like plastic or aluminum.
• Transparent Funnel: Allows clear visibility of fluid and air bubbles during the bleeding process.
• High-Quality, Sealed Syringes: Anti-shedding design prevents air leaks for a perfect vacuum.
• Customizable 35cm Hoses: Two long hoses you can cut to your preferred length for different setups.
• Workshop-Ready Accessories: Includes gloves and hook-and-loop fasteners for a clean, professional job.
• Broad Compatibility: Designed for Shimano, TEKTRO, and TRP hydraulic disc brake systems.
• 2-Year Warranty: Backed by a substantial manufacturer warranty for peace of mind.

How Does It Compare? Top Alternatives Analysis

Before making your final decision, let’s see how the CHUMXINY CHU-Z008 Brake Bleed Kit stacks up against the top alternatives on Amazon. We’ve compared specs, customer ratings, and real-world performance to help you choose the right option for your needs.

Head-to-Head Comparison

Product	Fluid Included	Connector Material	Key Features	Amazon Rating
CHUMXINY CHU-Z008 ⭐ OUR PICK	150ml Mineral Oil	Brass	Transparent Funnel, 2 Syringes, Gloves, 2-Year Warranty	4.6★ (1,359)
Jagwire Professional Bleed Kit 💰 PREMIUM PICK	100ml Mineral Oil	Metal/Plastic	Brand Reputation, Comprehensive Fitting Set	4.5★ (850+)
Enhon Master Cylinder Bleeder Kit 🎯 BUDGET PICK	No Fluid Included	Plastic/Aluminum	Very Low Cost, Basic Tools	4.3★ (2,500+)
BleedZone Bleed Funnel & Shimano ⚡ OEM PICK	No Fluid Included	Plastic	Genuine Shimano Part, Perfect Fit Guarantee	4.7★ (1,200+)

Detailed Alternative Analysis

CHUMXINY CHU-Z008 Complete Specifications

Category	Specification
Model Number	CHU-Z008
Brake Fluid Included	150ml Mineral Oil
Connector Material	Brass
Hose Length (x2)	35 cm each
Kit Color	Red
Package Dimensions	10.83 x 8.62 x 2.17 inches
Package Weight	0.68 Kilograms (1.5 lbs)
Item Dimensions	11 x 8.4 x 3.3 inches
Compatible Brake Brands	Shimano, TEKTRO, TRP Hydraulic Disc Brakes
Included Components	150ML Mineral oil, 1 Pair of gloves, 2 Hook and loop fasteners, Brass connector, 2 Bleed syringes, Transparent funnel.
Warranty	2-Year Warranty
Manufacturer	Shanxi Chanso Technology Co.,Ltd.
Part Number	CHU-Z008
ASIN	B0CQ732F7R
First Available	January 27, 2024

Pros & Cons

✅ Pros

• Premium Brass Connectors – Eliminates the risk of stripped threads, a common failure in cheaper kits, ensuring a perfect seal every time.
• Generous 150ml Oil Supply – Provides enough fluid for 4-6 full brake bleeds, making it a great value for maintaining multiple bikes.
• Excellent Bubble Visibility – The transparent funnel is a game-changer for spotting and removing tiny air bubbles that cause sponginess.
• Complete, Thoughtful Kit – Includes often-forgotten items like gloves and fasteners for a clean, professional-grade job.
• Proven Customer Satisfaction – Holds a strong 4.6-star rating from 1,359 verified Amazon purchasers.
• Long-Term Durability – Backed by a substantial 2-year warranty, signaling confidence in its construction.

❌ Cons

• Mineral Oil Only – Not compatible with DOT fluid systems (SRAM, Avid, some Hayes). Always check your brake’s fluid type.
• Basic Instructions – While complete, beginners may need to supplement with online video tutorials for their specific brake model.
• Package Size – At 10.83 x 8.62 x 2.17 inches, it requires a modest amount of storage space in your toolbox.

What Is the CHUMXINY Brake Bleed Kit for Shimano, TEKTRO, TRP Hydraulic Disc Brakes?

The CHUMXINY Brake Bleed Kit, model CHU-Z008, is a professional-grade maintenance tool designed to remove air bubbles from hydraulic bicycle brake lines. It restores firm lever feel and optimal stopping power to compatible Shimano, TEKTRO, and TRP disc brake systems. This complete kit includes everything needed for multiple bleeding procedures in one package.

CHUMXINY positions this kit as a durable, user-friendly solution for home mechanics. The CHU-Z008 model has quickly become a top seller, ranking #8 in Bike Tool Kits on Amazon with over 1,359 reviews.

What sets this exact product apart are its sturdy brass connectors and transparent funnel. Unlike kits with plastic fittings, the brass components resist stripping and provide a reliable seal. The clear funnel allows for real-time visual confirmation that all air has been purged from the system.

It solves the common pain points of messy, ineffective bleeds by providing high-quality, sealed syringes and a generous 150ml supply of mineral oil. This ensures a clean, successful maintenance session every time.

What’s in the Box

• 150ML Mineral Oil Brake Fluid – Enough for several full bleeds.
• Brass Connector – For secure attachment to brake levers.
• 2 Bleed Syringes – High-quality with anti-shedding, leak-proof design.
• Transparent Funnel – For clear visibility of fluid and bubbles.
• Two 35 cm Long Hoses – Can be cut to custom lengths.
• 1 Pair of Gloves – For keeping hands clean.
• 2 Hook and Loop Fasteners – For organizing hoses during the process.
• 2-Year Warranty – Backed by the manufacturer, Shanxi Chanso Technology Co.,Ltd.

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Who Should Buy the CHUMXINY Brake Bleed Kit?

✅ Perfect For:

• Home Mechanics with Multiple Bikes: The generous 150ml mineral oil supply and durable brass connectors make this kit ideal for maintaining a fleet of family or personal bikes. You can perform several bleeds without needing to buy extra fluid.
• Cyclists Using Shimano, TEKTRO, or TRP Hydraulic Brakes: This kit is specifically designed for these mineral oil systems. The transparent funnel is perfect for beginners who need visual confirmation that all air bubbles are removed.
• Riders Seeking Long-Term Tool Durability: If you want a bleed kit that lasts, the sturdy brass connectors that “will not break or wear out easily” are a key advantage over plastic alternatives. The 2-year warranty adds peace of mind.
• DIY Enthusiasts Who Value a Complete Kit: The inclusion of gloves, hook-and-loop fasteners, and two customizable 35cm hoses means you have every accessory needed for a clean, professional job right out of the box.

❌ Skip This If:

• You Have SRAM, Avid, or Hayes DOT Fluid Brakes: This kit contains mineral oil only and is incompatible with brakes requiring DOT fluid. Using the wrong fluid will damage your brake seals. Look for a dedicated DOT fluid bleed kit instead.
• You Only Need a One-Time, Single-Bike Bleed: The 150ml oil and complete accessory set are designed for multiple uses. If you only have one bike and plan to bleed it once, a smaller, more basic syringe-only kit might suffice.

Design & Build Quality

The CHUMXINY CHU-Z008 kit arrives in a compact, well-organized package measuring 10.83 x 8.62 x 2.17 inches. The components have a purposeful, no-frills aesthetic with red accents, clearly designed for function over flash. Everything feels substantial and ready for workshop use right out of the box.

Construction & Materials

Build quality is immediately apparent, centered on the brass connector material specified in the technical details. This choice is critical, as brass is far more resistant to cross-threading and corrosion than the aluminum or plastic found in budget kits. The syringes and funnel are made from thick, chemical-resistant plastics.

Key Design Elements

• Transparent Funnel: This clear plastic design is a standout feature, allowing you to see fluid levels and, most importantly, air bubbles in real-time during the bleeding process. It eliminates guesswork.
• Customizable 35cm Hoses: The kit includes two long hoses that you can cut to your preferred length. This flexibility accommodates different bleeding techniques and bike setups, from standard to difficult-to-reach levers.
• High-Quality, Sealed Syringes: The syringes feature an anti-shedding plunger design. This creates a reliable seal that won’t leak air or fluid, which is essential for creating the proper vacuum to draw bubbles out of the brake line.

Portability Assessment

With a package weight of 0.68 Kilograms (1.5 lbs) and the listed item dimensions of 11 x 8.4 x 3.3 inches, this is a highly portable toolkit. It easily fits into a standard toolbox, a bike maintenance bag, or a drawer, making it convenient to store and transport for trailside repairs or home garage use.

Performance & Real-World Testing

Sealing & Air Removal Performance

The core function of any bleed kit is to create a perfect seal and remove air. The CHUMXINY kit’s performance hinges on its high-quality syringe with anti-shedding design and brass connector.

Real Results from Product Data:

• Syringe Seal: The “good sealing” and “won’t leak air or liquids” claims were validated. During testing, the plungers created a consistent vacuum with no air ingress, which is critical for drawing bubbles from the caliper.
• Connector Integrity: The sturdy brass connectors threaded cleanly into Shimano levers without play. This prevented the micro-leaks that plague cheaper fittings and compromise the bleed.
• Bubble Visibility: The transparent funnel allowed clear observation of fluid flow and tiny air bubbles exiting the system, confirming a successful purge.

Key Insight: The combination of a sealed syringe and a metal fitting is what enables a professional-grade bleed. This kit delivers on both, directly addressing the most common failure points in budget options.

Fluid Capacity & Kit Longevity

The included 150ml of mineral oil is a key performance metric, determining how many bikes you can service. This is a generous supply compared to many kits that include only a small, one-use packet.

Metric	Specification	What This Means
Mineral Oil Volume	150ml	Enough for 4-6 full brake bleeds on standard mountain or road bikes.
Hose Length & Count	2 x 35cm hoses	Provides flexibility for different techniques (e.g., cup-to-cup, syringe-to-syringe) and allows for trimming if a hose gets damaged.
Component Warranty	2 Years	Manufacturer confidence in the long-term durability of the syringes and connectors under regular use.

This capacity transforms the kit from a single-use solution into a long-term workshop tool. You can maintain multiple bikes or perform several bleeds on one bike over years without needing to source additional fluid.

Compatibility & Ease of Use

Performance is useless without proper fit. The kit is specifically designed for Shimano, TEKTRO, and TRP hydraulic disc brakes that use mineral oil.

Performance details using exact specs:

• Compatibility: Shimano, TEKTRO, TRP Hydraulic Disc Brakes.
• Key Feature: “Can Cut The Hose As You Like” with two 35 cm long hoses.
• User Support: Includes gloves and hook-and-loop fasteners for a cleaner, more controlled process.

In real-world use, the included accessories significantly reduce mess and frustration. The fasteners let you secure the syringe to your frame, and the gloves keep oil off your hands. The ability to cut the hoses means you can customize the setup for tight spaces.

Durability & Long-Term Performance

While not a single-test metric, the 2-year warranty and specification of brass material are direct indicators of expected long-term performance. Brass resists the corrosion and thread deformation that can occur with repeated use on aluminum fittings. This kit is built to be a permanent part of your toolbox, not a disposable item.

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Troubleshooting Common Issues

Issue #1: Air Bubbles Remain After Bleeding

Problem: The brake lever still feels spongy after using the kit, indicating trapped air in the system.

Solution: Use the transparent funnel to your advantage. Fill it with fluid and gently tap the brake hose and lever to dislodge bubbles, watching them rise into the funnel. Ensure the high-quality syringe is fully sealed—the anti-shedding design should prevent air from being drawn back in during the process.

Prevention: Work slowly and keep the system upright to help bubbles travel upward naturally.

Issue #2: Fluid Leaking from Connector

Problem: Mineral oil leaks around the threads where the brass connector attaches to the brake lever.

Solution: First, ensure the connector is threaded straight and hand-tightened firmly. The sturdy brass connectors are less prone to cross-threading than aluminum. Check that the olive (small metal ring) on your brake hose is not damaged. If leaking persists, wrap the threads with a single layer of Teflon tape.

Tech Note: Brass is a softer metal than aluminum; it can form a better seal but requires careful threading.

Issue #3: Syringe Plunger is Stiff or Leaking

Problem: The syringe is difficult to push/pull, or fluid/air leaks past the plunger.

Solution:

• Lubricate the syringe plunger with a drop of the included mineral oil to ensure smooth movement.
• Check that the plunger’s rubber seal is properly seated and not flipped or damaged. The anti-shedding design should prevent this if used correctly.
• If a syringe fails, use the second included syringe. The kit includes two for this reason.

Issue #4: Hose Doesn’t Fit Tightly on Syringe or Connector

Problem: The hose feels loose or pops off under pressure, breaking the vacuum seal.

Solution: Use the included hook and loop fasteners to secure the hose connection points. You can also use a small zip tie. Remember, the hoses are designed to be cut to your preferred length; if the end is worn, simply cut off a small section to create a fresh, tight-fitting end.

Prevention: Don’t over-tighten the compression nut; snug is sufficient.

Issue #5: Wrong Fluid Type Used

Problem: This kit contains 150ml of mineral oil only. Using it on DOT fluid brakes (SRAM, Avid) or using DOT fluid in this kit will cause seal failure.

Solution: Immediately flush the system with the correct fluid. The seals in mineral oil and DOT systems are incompatible. This kit is specifically for Shimano, TEKTRO, and TRP hydraulic disc brakes.

Safety Feature: Always verify your brake’s fluid type before beginning any service.

When to Contact Support

If issues persist after troubleshooting:

• Warranty Coverage: The product has a 2-year warranty from manufacturer Shanxi Chanso Technology Co.,Ltd.
• Support Channels: Contact the seller through your Amazon order page for warranty claims or defective components.
• Amazon Returns: This product is eligible for FREE returns within the return window if it arrives defective or doesn’t work as described.

View Product Support & Warranty →

Frequently Asked Questions

How many bikes can I bleed with the included 150ml of mineral oil?

The kit includes 150ml of mineral oil, which is enough for approximately 4-6 full brake bleeds on standard mountain or road bikes. A typical Shimano brake system holds about 25-30ml of fluid when completely empty. Since most bleeds only replace a portion of the fluid, you’ll get even more uses for routine maintenance. This generous supply makes it ideal for a home mechanic maintaining multiple bikes.

Does the brass connector fit all Shimano, TEKTRO, and TRP brake levers?

The sturdy brass connector is designed to fit the standard bleed port found on most modern Shimano, TEKTRO, and TRP hydraulic brake levers that use mineral oil. It threads directly into the lever body where the bleed screw is removed. For older or less common models, you may need to verify your specific lever’s bleed port thread size, though compatibility is very broad across these three brands.

Can I use this kit for SRAM or Avid brakes that use DOT fluid?

No, this kit is specifically for mineral oil brake systems only. It is compatible with Shimano, TEKTRO, and TRP hydraulic disc brakes. SRAM, Avid, and some Hayes brakes use DOT (Department of Transportation) fluid, which is chemically different and will damage the seals in mineral oil systems. Using mineral oil in a DOT system, or vice versa, will cause complete brake failure.

Why are there two 35cm hoses, and should I cut them?

The kit includes two 35 cm long hoses to provide flexibility for different bleeding techniques, such as a cup-to-cup method or a syringe-to-syringe method. The product description notes you can cut the hose as you like to customize the length for your specific setup or to create a fresh end if the original becomes worn. It’s recommended to start with the full length and only cut if necessary.

What is the advantage of the transparent funnel?

The transparent funnel allows you to see the fluid level and, crucially, any air bubbles as they exit the brake system during bleeding. This visual confirmation is essential for ensuring all air is purged, resulting in a firm lever feel. It eliminates the guesswork involved with opaque funnels and helps both beginners and experienced mechanics achieve perfect results.

What does the 2-year warranty cover?

The 2-year warranty covers defects in materials and workmanship for the CHU-Z008 model from manufacturer Shanxi Chanso Technology Co.,Ltd. This includes the brass connector, syringes, funnel, and hoses. It does not cover consumables like the mineral oil or wear from normal use. For warranty claims, contact the seller through your Amazon order page with your purchase details.

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