Model
Made In
Quality steel rear sprockets. Choose 41T through 47T. The stock size for the 650 is 47T.
The stock size for the 02-05 1000 is 42T and 06-up is 41T. Go up in tooth count for faster acceleration. Go down for lower rpm at cruising speed.
Color may vary based on manufacturer availability, quality will not be compromised.
Stock gearing uses a 45 tooth rear sprocket
The 50 tooth rear sprocket will give you much lower gearing for off-road use. You will need a longer chain for this rear sprocket, please order the 130 link chain to fit with this larger sprocket, it may need to be shortened to fit correctly.
Quality steel rear sprockets. Choose 525 or 520. 41T to 50T
48 and 50 sprockets require removal or modification of your lower chain guide.
Chain Size Recommendations:
- 110 link chain for a 42 tooth rear sprocket
- 112 link chain for a 46 tooth sprocket
- 120 link for the 48 and above sprockets.
- 120 link chain will have to be cut to the proper size for the 48 and 50.
*Actual sprocket color may differ from image shown.
- Computer-designed to achieve ultimate strength at minimum weight
- JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value
- Every sprocket meets or exceeds the highest possible quality standards set for the motorcycle industry
- Sprockets are heat-treated and bead-blasted to reduce material surface tension
- Unless noted, front sprockets are made with C45 steel and SCM415 chromoly steel alloy; rear sprockets made with top-quality-grade C45 high-carbon steel
- Computer-designed to achieve ultimate strength at minimum weight
- JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value
- Every sprocket meets or exceeds the highest possible quality standards set for the motorcycle industry
- Sprockets are heat-treated and bead-blasted to reduce material surface tension
- Unless noted, front sprockets are made with C45 steel and SCM415 chromoly steel alloy; rear sprockets made with top-quality-grade C45 high-carbon steel
- Computer-designed to achieve ultimate strength at minimum weight
- JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value
- Every sprocket meets or exceeds the highest possible quality standards set for the motorcycle industry
- Sprockets are heat-treated and bead-blasted to reduce material surface tension
- Unless noted, front sprockets are made with C45 steel and SCM415 chromoly steel alloy; rear sprockets made with top-quality-grade C45 high-carbon steel
- Use a rear sprocket with a higher number of teeth for quicker acceleration and technical offroad trails.
- Use a rear sprocket with a lower number of teeth for lower engine rpm's at highway speeds.
- Stock size is 50 teeth.
We recommend using the Rear Sprocket Bolt Kit when installing most aftermarket sprockets on your TW.
JT Sprockets is the world's leading manufacturer of aftermarket sprockets, constantly raising the industry's standards for quality and service. JT Sprockets are the only sprocket manufacturer using the ultra-durable high carbon C49 steel for rear sprockets.
Stock Gearing: 15/45-520x112
For reference, the stock gearing for the WR250R is 13/43 while the X model runs with a 13/42 stock configuration because of the SM wheels/tires. Both use a 108 link chain with the stock gearing.
The JT rear sprockets listed are made from the finest 545C high carbon steel and are then heat treated and hand finished to meet or exceed OEM standards. Outlasts many mild steel or surface hardened sprockets as much as two and three times over.
Limited availability on Aluminum from PBI. Manufactured from aircraft 7075 T651 Plate Aluminum.
If you want the additional low-end grunt that the 46, 48 or 50 tooth rear sprocket will give you, you will need longer chain as well.
New Rear Sprockets require new Sprocket Bolts because of a difference in the holes vs. the stock bolts.
JT steel rear sprockets are manufactured using only the finest grade of C49 high carbon steel.
Two styles of rear sprocket were used on the DR350. The 90-95 'S' and 'SE' (street legal) models have a cush drive hub. The 96-99 'S' and 'SE' as well as all of the 'dirt only' models have a non-cush rear hub. Select your sprocket accordingly. If you are not sure, look at your bike. If the sprocket is bolted directly to the wheel hub you have a non-cush model. If your sprocket is bolted to a separate sprocket carrier you have a cush drive model.
This kit will replace your stock sprocket bolts, nuts and keepers with new hardware.
Many aftermarket sprockets are thinner where they bolt to the wheel and the threads on the stock bolts do not allow these sprockets to be tightened down all the way. These grade 10.9 bolts will alleviate that problem. They are the same length as the stock ones, but the threaded area is longer allowing stock sprockets or aftermarket sprockets to be securely tightened down.
The bolt keepers are genuine Yamaha replacement parts to ensure an accurate fit. It's a perfect upgrade if your keepers have been removed too many times.
- Six class 10.9 steel sprocket bolts with matching factory-style metal locking Fuji nuts
- Each sprocket bolt has medium-strength threadlock patches for a double lock
- Includes Allen key insert that adapts 8mm T-handle or socket to proper Allen key size for easy installation and removal
- PART #2401-0941 is made to match stock CRF sprocket hardware with 14mm nuts but will work with most Japanese models
ULTIMATE SPROCKET WRENCH KIT
- 12” long wrench gives you more torque to get those thread locked sprocket bolts off easily
- Double ended 12mm & 13mm to fit all modern motocross, Enduro and dual sport bikes
- Dog leg wrench design allows wrench to easily clear rim edge and wide tires
- 8mm allen fits most Japanese bikes 8” long for extra leverage
- Torx T45 fits late model KTM and Husqvarna bikes, 8” long for extra leverage
- Vinyl coated handles to protect rim edge and give a non slip grip
- Makes routine sprocket bolt maintenance a quick and easy job