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1978 Yamaha YZ250

JT Steel Chain And Sprocket Kit


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Product Description

The MotoSport.com JT Steel Chain And Sprocket Kit includes ONE Steel Countershaft (Front) Sprocket, ONE Steel Rear Sprocket, and your choice of ONE Premium 520 Drive Chain, each with the following features:

Sprockets / Chainwheels Included:

JT Sprockets is the world's leading manufacturer of aftermarket sprockets, constantly raising the industry's standards for quality and service. They are committed to supplying the most durable, best quality sprocket available in the marketplace worldwide. This is why they produce and sell more sprockets than all the other aftermarket brands combined.

JT Front & Rear Sprocket:

  • Made from the latest generation of computer design and control metal cutting equipment for maximum durability.
  • Rear sprockets are made from the finest C45 high-carbon steel.
  • Front sprockets are made from chromoly SCM420 steel alloy.
  • All sprockets are heat treated and hand finished to meet or exceed the highest possible quality standards.

Your Choice of Drive Chain:

D.I.D 520 Standard Chain - 120 Links:

The D.I.D Standard Non-O-Ring Chain is designed for low horsepower, smaller displacement mopeds, scooters and vintage motorcycles.

  • For machines originally equipped with non-O-ring chains.
  • Solid rollers.
  • Shot-peened parts.
  • High cylindrical and roundness accuracy.
  • Exacting tolerances provide low friction.
  • Pre-stretched.
  • Special alloy steel with extended riveted bushing "anti-kink" design.
  • Highest quality non-O-ring chain in overall combined performance.
  • Average tensile strength of 7,200 pounds.
  • Wear life index: 100.
  • Includes a clip-style master link.
  • 120 links.
  • Note: Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use.

D.I.D 520 NZ Heavy Duty Chain - 120 Links:

Pinning your bike out of every turn might tear apart the stock chain, but D.I.D and their 520NZ chain will not let you, or your race for first, down.

  • For machines originally equipped with non-O-ring chains.
  • Solid rollers.
  • Shot-peened parts.
  • High cylindrical and roundness accuracy.
  • Exacting tolerances provide low friction.
  • DHA pin treatment - hard chromium-carbide layer formed on pin surface for exceptional strength and wear resistance.
  • Pre-stretched.
  • Special alloy steel with extended riveted bushing "anti-kink" design.
  • Highest quality non-O-ring chain in overall combined performance.
  • Up to 19% higher tensile strength; average tensile strength of 8,220 pounds.
  • Wear life index: 410.
  • Rated for up to a 250cc bike.
  • Weight (per 100 links): 3.54 pounds.
  • Includes a clip-style master link.
  • 120 links.
  • Note: Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use.

D.I.D 520 ERT2 Gold Chain - 120 Links:

The D.I.D ERT2 chain is the most trusted chain in Supercross and motocross racing because of its reputation of meeting the high quality demands that are required when pushing the limits. It was designed with the intention of making a chain that is optimized for the purpose of racing. D.I.D beefed up the ERT2 chain by increasing the pin size by 3% to give the chain an average tensile strength of 8,100 pounds. Increasing the strength of the ERT2 chain did not come with a sacrifice of weight, in fact DID was able to shed 5% from the previous ERT chain.

  • Exclusively designed for motorcycle racing.
  • High-performance, lightweight and low friction chain.
  • 3% bigger pin diameter and 5% lighter than former ERT.
  • Provides the highest wear resistance, tensile strength and impact resistance.
  • Average tensile strength of 8,100 pounds.
  • Wear life index: 430.
  • Rated for up to a 450cc motocross bike.
  • Weight (per 100 links): 2.99 pounds.
  • Includes a clip-style master link.
  • 120 links.
  • Notes: ERT and ERT2 Connecting Links are not interchangeable. Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use.

D.I.D 520 DZ2 Chain - 120 Links:

The All New D.I.D 520DZ2 is the best value in a lightweight, high-performance chain designed for motocross racing.

  • Great value in a lightweight chain.
  • Designed for off-road riding and motocross.
  • The DZ2 has twice the lifespan of the previous DZ.
  • SDH pin treatment - hard chromium-carbide layer formed on pin surface for exceptional strength and wear resistance.
  • Flexible inner soft core absorbs shock.
  • For entry level motocross, trial riding at an affordable price.
  • Average tensile strength of 7,870 pounds.
  • Wear life index: 410.
  • Rated for up to a 450cc motocross bike.
  • Weight (per 100 links): 3.08 pounds.
  • Includes a clip-style master link.
  • Gold finish, 120 links.
  • Notes: DZ and DZ2 Connecting Links are not interchangeable. Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use.

D.I.D 520 ERV3 X-Ring Chain - 120 Links:

The D.I.D ERV3 X-ring chain is the ultimate high-performance, lightweight, low-friction race chain available and is used extensively by many off-road race teams. The ERV3 X-ring chain utilizes D.I.D's patented X-ring technology which reduces friction by 50% over standard O-ring chains for minimized power loss. The pins on the ERV3 X-ring chain have been put through a patented heat-treatment process to produce a pin that is 1.5 times harder than conventional pins. The result is a chain that is significantly stronger and offers better wear resistance than many other chains on the market. D.I.D ERV3 X-ring chains feature a gold-plated finish that resists rust and adds a little style to your motorcycle or ATV.

  • Exclusively designed for motorcycle racing.
  • High performance, lightweight and low friction chain provides the winning edge in World Class competition.
  • Features gold color plates.
  • Average tensile strength of 8,650 pounds.
  • Wear life index: 3100.
  • For 250 - 750cc Rally, 750cc Superbike and 250 - 750cc Endurance applications.
  • Weight (per 100 links): 3.30 pounds.
  • Includes a rivet-style master link.
  • 120 links.

D.I.D 520 VX2 X-Ring Black Chain - 120 Links:

D.I.D's Pro-Street X-Ring® VX Series Chains are high quality X-Ring® chains with superior strength to withstand the horsepower of today's dual sports and trials bikes. The VX Series uses D.I.D's patented low friction X-Ring® for maximum performance.

  • Greater rigidity (7% higher than previous VM chain) creates smother handling, reduced power loss and quicker response.
  • Highest value in all D.I.D series.
  • D.I.D X-Ring has half the friction and 50 - 100% longer wear life compared to typical O-ring chains.
  • Superior longer life than previous VM series.
  • Solid rollers.
  • Shot-peened parts.
  • Pre-stretched.
  • Extended riveted bushing "Anti-Kink" design.
  • Replaces the Professional O-ring V Series and the Premium X-ring VM series chains.
  • Average tensile strength of 8,210 pounds.
  • Wear life index: 3500.
  • Ideal for bikes and ATV's up to 750cc.
  • Weight (per 100 links): 3.35 pounds.
  • Includes clip-style master link.
  • 120 links.

D.I.D 520 VX2 X-Ring Gold and Black Chain - 120 Links:

  • Greater rigidity (7% higher than previous VM chain) creates smother handling, reduced power loss and quicker response.
  • Highest value in all D.I.D series.
  • D.I.D X-Ring has half the friction and 50 - 100% longer wear life compared to typical O-ring chains.
  • Superior longer life than previous VM series.
  • Solid rollers.
  • Shot-peened parts.
  • Pre-stretched.
  • Extended riveted bushing "Anti-Kink" design.
  • Replaces the Professional O-ring V Series and the Premium X-ring VM series chains.
  • Average tensile strength of 8,210 pounds.
  • Wear life index: 3500.
  • Ideal for bikes and ATV's up to 750cc.
  • Weight (per 100 links): 3.35 pounds.
  • Includes clip-style master link.
  • 120 links.

Renthal 520 R1 Gold Race Chain - 120 Links:

Renthal's R1 Works Chain is a high-strength non O-ring chain with excellent impact load resistance designed specifically to withstand the stress found in off-road applications. This chain is the choice where a combination of high strength, light weight and maximum power transfer are important considerations.

  • Shot-peened alloy steel side plates for high tensile strength and maximum impact load resistance.
  • Chamfered inner links to reduce the chance of chain derailment.
  • Extended bushings to reduce friction between outer and inner link plates, maximizing power output.
  • Chromized bearing pins for excellent resistance to wear.
  • Gold color side plates help prevent corrosion.
  • Most perfectly matched chain for Renthal sprockets allowing maximum power at the rear wheel. This also extends the life of both the chain and sprockets.
  • Average tensile strength of 7,644 pounds.
  • Wear life index: 300.
  • Maximum displacement (street / off-road): N/A / 500cc.
  • Weight (per 100 links): 2.13 pounds.
  • Each chain includes master link and a pair of latex gloves for mess free installation.
  • 120 links.
  • Note: Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use.

Renthal 520 R3 O-Ring Chain - 120 Links:

Renthal's R3-2 O-ring Chain is a high-strength sealed-ring chain with excellent impact load resistance designed specifically to withstand the stress found in off-road applications where an O-ring chain is desired. This chain is the choice where a combination of high strength, light weight and maximum power transfer are important considerations. The O-rings help extend chain life by retaining the special vacuum-injected grease near the critical pin area. Chain comes pre-stretched to shorten break-in period.

  • Nitrile O-rings extend chain life by retaining special vacuum-injected grease inside the chain joint.
  • Shot-peened alloy steel side plates for high tensile strength and maximum impact load resistance.
  • High-carbon alloy steel bearing pins for excellent resistance to wear.
  • Gold colored side plates help prevent corrosion.
  • Pre-stretched to enhance performance of the chain.
  • Available in 520 pitch only.
  • Average tensile strength of 7,644 pounds.
  • Wear life index: 750.
  • Maximum displacement (street / off-road): N/A / 500cc.
  • Weight (per 100 links): 3.36 pounds.
  • Each chain includes a pair of latex gloves for mess free installation.
  • 120 links.
  • Note: The Renthal R3-2 chain is supplied with both an easy-fit split master link and a superior solid-pin rivet master link which matches the durability of the chain.

Note for installing X-ring chains: As X-ring chains are wider than standard roller chains, when fitting an X-ring chain to a motorcycle that was fitted with a non O-ring chain as original equipment, it is essential to check that there is proper clearance of the engine cases near the countershaft sprocket and any other places of close contact. Failure to do so could result in damage to the chain and motorcycle and could ultimately cause the chain to fail.

Note: Image is for reference ONLY, actual product will vary based on fitment and selection.

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(49)
4.5 out of 5 stars
5 star   31
4 star   15
3 star   1
2 star   1
1 star   1
1-10 of 49
Overall
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Ease of Installation
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Style
Top 1000 Contributor Verified Purchaser
Location: Eastern NC
Wears like IRON

2700 Miles of rocky mountain singletrack, high desert blasting, Moab, and sprockets are probably 40% worn. I've adjusted the chain once. I don't race, so I decided to trade some weight for durability on the rear sprocket, and saved some money while doing it. Got the sprockets and an o-ring chain for an excellent price and believe I will go with the 'cheap, heavy, durable' sprockets and a nice sealed chain from now on. If you have a KTM, front sprocket thickness is important to maintain pressure on the countershaft o-ring, so a thicker o-ring may be necessary.

Overall
Durability
Ease of Installation
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Top 1000 Contributor Verified Purchaser
Location: Portland, OR
Great Bang For The Buck!

Nice Sprocket Kit for the price.

Overall
Durability
Ease of Installation
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Style
Verified Purchaser
Location: Chehalis, WA
Good chain good price

Only chain and sprocket kit I could find for a 300ex. It didn't disappoint though. It was a good quality set at a very affordable price. Very Happy with it. I'm sure it will last as long as the oem one.

Overall
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Verified Purchaser
Location: Massachusetts, USA
Kdx sprocket

This sprocket is very nice! It came in black wich is better than expected. It is heavy but i dont care because it being steel is expected though.

Overall
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Ease of Installation
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Verified Purchaser
Location: NH
VALUE!!!

You cant beat the price and they last forever!!!

Overall
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Ease of Installation
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Style
Verified Purchaser
Location: Western PA, USA
Replacement sprockets

Descent deal means not the highest quality but if you know how to take care of the bike, adjust the chain, lube the chain make sure the rub plate and guide etc are ok, then it'll hold up. My use motocross racing didnt have a problem just needed a cheap set at the time.

Overall
Durability
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Verified Purchaser
Location: Somewhere, MD
Very pleased with the performance of these brakes.

Very pleased with the performance of these brakes.

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Ease of Installation
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Style
Verified Purchaser
Great product!

Amazing product for the price! Have put several rides on and doesnt show much wear and tear yet! Would definitely buy again!

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Durability
Ease of Installation
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Style
Verified Purchaser
Location: Lincoln, NE
Excellent

I have a DID x ring chain on my 450r for trail and motocross and they are very tough. rarely have to adjust for chain stretch and the gold links make the chains look great too.

Overall
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Location: North Dallas, TX
Good Stuff

I like changing out my sprockets and chains at the same time. This set and the other selections like this make it easy. I went with steel for longevity. So far no issues - all is good.

1-10 of 49
Total Questions (2)
Questions with answers:
  2
Questions without answers:
0
1-2 of 2
augie 3 months ago Location: Mesa, AZ
Sprocket kit for 2007 Yamaha XT225?
I searched for it and a kit comes up with a note that it won't fit my bike. Why even show it? Is there a front sprocket for my XT225 with 16 teeth instead of the stock 15? I want to make this a road bike. If I also change the rear to have one less tooth will that kill the power too much? thanks, augie
Expert MotoSport Staff
3 months ago Location: Portland, OR, USA
Unfortunately, It does not look like we carry any aftermarket sprockets for your 2007 Yamaha XT225. As far as the gear ratios when changing sprockets a good rule of thumb would be going up 1 tooth on the front is about the equivalent to going down 3 teeth on the back. Going down just 1 tooth on the back will only make a slight difference in the bikes gear ratio so you shouldn't loose too much power there. As far as the different size sprockets for your bike I'd recommend giving us a call at 888-676-8853 and we could possibly see if there are any sprockets we can special order for your bike.
mike 1 year ago Location: Aloha, OR, USA
Looking at the jt steel chain and sprocket , do you have a front sprocket that is a 12 tooth ?
MotoSport Staff
1 year ago Location: Portland, OR, USA
Unfortunately we do not have a 12 tooth available for this kit when referring to a 2006 Honda CRF450X. We may be able to special order a 12 tooth countershaft sprocket from JT if you wanted to contact us.
1-2 of 2

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