The First A-share Listed Company In The Industry

Stock Number 003033

CHOHO official sponsor HONDA RACING 2025 MX-GP continues its new journey

CHOHO WORLD MX-GP SPONSOR CHAMPION Tim Gajser 243#

King of Racing chain

King of racing chain

CHOHO supports all the world's top races, and with its excellent quality and powerful performance, it has achieved many successes and won the favor of many competitive teams.

CHOHO HRC OFFICIAL SPONSOR

MXGP
CHAMPION RIDER
Gajser 243#

Approved by Ra CHOHO teams

XGP season.

MXGP

WORLD CHAMPION Gajser 243#

4-time MXGP World Champion (2016, 2019, 2020, 2022)

1-time MX2 World Champion (2015)

2024 MXGP World Runner-Up

Brief Introduction

Qingdao CHOHO Industry Co., Ltd. was founded in 1999, after 25 years of development, CHOHO has become a chain system technology leader, the first batch of state-recognized enterprise technology centers, the national technological innovation demonstration enterprises, China's first A-share listed company in the chain drive industry, stock code: 003033.

Original Supplier888888888888888

Modification of suitable models∞

Technical Advantages

RING ☆RING

HIGH WEAR HIGH -RESISTANT WEAR-RESISTANT

ANTI CORROSION -CORROSION RESISTANCE

HIGH ANTI PRECISION HIGH PRECISION -IMPACT IMPACT RESISTANCE

HIGH STRENGTH HIGH STRENGTH

α PIN α PIN

Vacuum oiling VACUUM OILING

HIGH ADHESION GREASE

SOLID BUSH SOLID BUSH

ISOTHERMAL THERMAL PROCESSING

☆RING

How ring seals the outlet of ubrication oil
Wear Test Comparison

α PIN

When the car accelerates and brakes violently, the chain is striken with great force. High-strength pins can meet this requirement.

SOLID BUSH

Seamless bushing is molded by cold extrusion technology, the cylinder has no gaps, the roundness is greatly improved, and it is not easy to deform. The fit of the seamless sleeve and the pin is surface contact instead of point contact, which increases the wear resistance of the product.

CRV PROCESSING TECHNOLOGY

CrV Treatment And C-n Treatment Wear Resistance Comparison
This technology is mainly used in the surface strengthening treatment of the pin shaft, which can make the surface hardness of the pin shaft reach 2200HV, and can improve the wear resistance of the chain by more than 100%

Zenming

Suitable for: Vintage Cruise / Imitation / Street / Rally

Featured Clients

Medium and large-displacement motorcycles and high-power electric motorcycles / Heavy-duty motorcycles and models with special strength requirements / Models with special appearance and customization needs.

Direct power without loss, rapid acceleration no stuttering sensation

Compared with roller chain system, Zenming chain system can increase the steady state transmission efficiency by 0.46% and the dynamic transmission efficiency by0.68%, which can effectively save energy and improve the range.

Loud sound and rhythmic sense of clacking enjoyable riding.

15% quieter than roller chain.

ZenMingToothed BeltRoler Chain Roller Chain with seal ring and Rubber Cushioned Sprockets

No slipping in curves, smoother gear shifting and a sense of unity in handling.

Accumulated 120,000 hours of road test, the elongation rate are less than 1%, through the data shows that Zhenming chain wear resistance is excellent, anti-fatigue performance is outstanding, able to cope with a variety of road conditions and ultra-long ride.

Personalized Design

The design is inspired by automobile wheel hubs and aircraft turbine engines and uses 3D technology to realize a sense of technology and futuristic feeling.

Applicable models: Liter level / track racing

Application By CC

Maximum 1300cc Satisfiable

Chain Performance

Excellent impact resistance and tensile strength

Excellent high fatigue strength

Reinforced pins and lightened chain plates

Special matching for chain and sprocket

Color Optional

Product Advantages

SXsies

Recommended for: Motorcycle riders / Street riders / City riders

Application By CC

Color Optional

Chain Performance

Stronger tensile strength

Stronger fatigue strength and impact resistance

Pin reinforcement and material upgrade

Special matching for chain and sprocket

Modification color reference

This chain and sprocket are taken in kind. Please consult the manufacturer for more colors.

X series

Recommended for: Mid-displacement Race Replica / City riding

Application By CC

Matimume 600cc Satisfiable

Chain Performance

Excellent tensile strength

Excellent fatigue strength and impact resistance

High fatigue technology, constant quality

Whole chain lightweight design

Color Optional

●●●

Chain plate shape optimization

The chain plate adopts a lightweight plate design, with thinner chain plate thickness and narrower waist, which is particularly suitable for rubbercoated sprockets.

Optimization of the pin head

The pin shaft is lightweight in design, shortening the overall width of the chain and making the entire chain lightweight.

Material and process upgrades

Upgrade to match high-strength craftsmanship to achieve lightweight and high strength.

Recommended for: Mid-displacement Race Replica / City riding

Application By CC

Maximum 450cc Satisfiable

Color Optional

Chain Performance

Fine alloy material

Special-treatment on Pin

High quality grease

High fatigue technology, constant quality

Product Advantages

How O- ring seals the outlet of lubrication oil

Approved by Racing Choice for Champions

The GP series chain system is tailor-made by CHOHO for the HRC team. with the core features of "High Strength, Lightweight, High Wear Resistance, Impact Resistance and Corrosion Resistance", it is specially designed for the harsh tracks of MXGP. It can withstand high-intensity impacts and the tests of complex terrains, helping riders break through performance limits.

GPseries MTOROS

Applicable models: Off-road / Track Racing

Chain Performance

1. High Strength: High-carbon steel undergoes isothermal heat treatment. The pin shaft adopts overall high-strength heat treatment, enhancing explosive force.

2. Lightweight: The link plate is made of high-carbon steel and features a narrow-waist design.
This optimizes the weight ratio, reduces power loss, and improves acceleration response.

3. High Wear Resistance: NiMo alloy steel is used. The sleeve adopts special-shaped cold heading forming and a special-shaped taper angle structure at both ends. The pin shaft applies Cr penetration technology, extending the service life by more than 20%.

4. Impact Resistance: Adopts frame consistent assembly process, enhanced pre-tensioning technology, and high-strength residual elongation process. The impact resistance strength is increased by 20%

5. Corrosion Resistance: Applies RGP anti-corrosion process and pin shaft Cr penetration anti-corrosion process. It has a bright appearance, reduces maintenance costs, resists rusting, and maintains stable output continuously.

Sprocket Performance

1. Application Scenarios: Designed for mud discharge chutes, it prevents sediment accumulation and is suitable for off-road multi-scenario complex working conditions.

2. Lightweight: Adopts lightweight materials, with structural simulation analysis and precise weight reduction design, reducing weight by 65% compared to steel sprockets.

3. High strength & Impact Resistance: Uses high-strength aviation aluminum alloy with T6 heat treatment technology.

4. High Wear Resistance & Corrosion Resistance: Features U-shaped tooth design and HAA process, ensuring strong wear resistance and acid-alkali resistance. 5. Personalization: Equipped with CNC precision machining and H.Y.Z colored oxidation technology, it offers a variety of pattern and color options and supports personalized customization.

Applicable models: arena competition

Product Performance

Lightweight: The chain plates are made of 1.5mm alloy steel with isothermal heat treatment and adopt a small-piece design, reducing weight by 10%. This effectively minimizes power loss and improves acceleration response.

Impact Resistance: The chain plates undergo isothermal heat treatment, the pins are strengthened, the frame is assembled with consistency, and enhanced pre-tensioning technology is applied, enabling it to withstand frequent gear shifts in racing track environments

■Lightweight: The sprockets are made of aviation aluminum material. Through structural simulation analysis and precise weight reduction design, they are 65% lighter than steel sprockets.

High Strength & Impact Resistance: The sprockets are made of high-strength aviation aluminum alloy with T6 heat treatment technology.

■High Wear Resistance: The sprockets feature a U-shaped tooth design. The large wheels adopt HAA process, combined with the overall carburizing and hardening heat treatment technology for small wheels, enhancing the wear resistance of the system.

Personalization: The sprockets undergo CNC precision machining and H.Y.Z colored oxidation technology, offering a variety of pattern and color options and supporting personalized customization.

The GP Racing Series Chain System shines on top-tier competitive arenas worldwide, thanks to its reliable, outstanding quality and powerful performance.

High-strength and lightweight chain
Specific seal ring
Drag and noise reduction
New generation of
noise-reducing small sprockets
Changed rubber hanging structure
New rubber material
High-precision large sprocket
Improves accuracy
Precise meshing

CHOHO Sprocket

CHOHO's large-displacement sprockets are original suppliers of the following manufacturers HONDA I YAMAHA I HARLEY-DAVIDSON I CFMOTO I QJMOTOR I KTMR2R

Steel Sprocket

Aluminum Alloy Sprocket

Single Rocker Sprocket

Steel-Clad Aluminum Sprocket

Chain Maintenance

Chain Maintenance Cycle

1. Routine maintenance is required every
500KM.

2. Maintenance is required after riding in rainy days.

Chain Replacement Cycle

Sealing ring chain: about 15000-20000KM Non-sealing ring chain: about 5000KM

Rusty chain

Common Abnormalities Of The Chain

The seal is cracked or falling off

The pin is deformed or the friction between it and the sleeve causes the chain to lengthen.
Roller cracked, pin scratched

Chain Installation and Adjustment

Chain Installation:

Please use the same type of connecting links as the chain.

②When installing, insert the connecting links into both ends of the chain first (Figure 1).

Use CHOHO special riveting tools to press the joints.

Make sure the sprocket axes are parallel and on the same plane (Figure 2).

Adjust the chain to maintain the appropriate tightness of 20–25mm (Figure 3).

Chain Adjustment:

When the seal ring chain is first installed, it may not rotate smoothly due to the pressure of the seal ring. We recommend that the chain be maintained every 1,000 kilometers. The ideal tightness is 20-25mm (Figure 3).

Be careful not to let the chain loosen or tighten too much! Excessive looseness may cause gaps between the chain sprockets and produce noise; excessive tension will affect the normal operation of the vehicle, put a greater load on the chain, shorten the chain life and increase fuel consumption.

Punched Chain Clasp

For large displacement motorcycles, please use perforated chain buckles.

Punch chain link installation tool.

Comparison of the link strength between punched chain buckles and ordinary chain buckles

The traditionall linking method can only reach 70% of the chain strength, while the punching type can increase it to 100%. Therefore, it is recommended to use punched chain buckles for large-displacement motorcycles.