Click here to see more performance options for your CR 85
| $750 | We Modify your top end. |
| $825 | Exchange top end - Call for availability - Additional Charge |
| $1225 | "Bolt On" - Includes Cylinder, head, and power valves (prices vary by year) |
| $100 | Optional Xtreme coated head and piston |
CR 90 Big Bore Specifications: |
Fits 1986-2007 CR80 and CR85 |
| Bore: Yes | Stroke: No | Actual Displacement = 89.57cc |
| Engine Modifications Required: | |
| Cylinder: | Bore, Port and Replate with Apticote 2000 ceramic bore coating. |
| Power Valves: | N/A |
| Head: | Rechamber to work with the Big Bore piston. 100 octane suggested for most conditions. |
| Crankshaft: | No crank mods required. |
| Crankcase: | No crankcase mods required. |
| Blueprint: | Calculate deck height, squish clearance, trapped volume, port timing and compression ratio and list on your perminant Spec-Sheet. (Some operations with install only) |
Notes: This kit requires you to send us your cylinder, head, and powervalves for modification.
Notes: Core parts subject to inspection before credits will be issued.
Notes: This is an entry level engine package that has excellent power delivery for CR90 ATV's. It runs with the best of them no problem and is a good option for racers on a tight budget.
Click Here to order this kit now!
CR90 (National Engine) Stroker
| $1570 | Send us your engine and get a 90cc stroker kit installed. (CR80 cylinder in good condition) |
| $1795 | Send us your engine and get a 90cc stroker kit installed. (CR85 cylinder-no major damage) |
| $1275 | Spare CR105 top end for later use in supermini classes. (prices vary by year) |
| $100 | Optional Xtreme coated head and piston |
CR 90 Stroker Specifications: |
Fits 1998-2007 CR80 and CR85 |
| Bore: No | Stroke: Yes | Actual Displacement = 89.18cc |
| Engine Modifications Required: | |
| Cylinder: | De-Bore, Port and Replate with Apticote 2000 ceramic bore coating. |
| Power Valves: | N/A |
| Head: | Rechamber to work with the stroker crank. 100 octane suggested for most conditions. |
| Crankshaft: | Stroked and balanced. |
| Crankcase: | Modified to clear stroker crank. |
| Blueprint: | Calculate deck height, squish clearance, trapped volume, port timing and compression ratio and list on your perminant Spec-Sheet. |
Notes: This kit requires you to send us your entire engine for modification, with kickstarter and shifter.
Notes: This is a national level engine package. The power delivery is designed to build confidence for young riders. It delivers torque and hook up that are un-paralleled in the industry that carrys to a screaming top end pull. This kit just makes all riders faster because it is smooth, easy to ride, and does not fall off the pipe like other engines out there.
Notes: This is the same bottom end as our CR105. We can also build you a CR105 top end for later use in the supermini classes.
Notes: Prices listed are to install stroker kit parts in good condition engine. Should your engine need rebuild parts there will be additional charges. We will call for approval before we install any parts that will have additional charges. (example: rod kit, mains, main seals, trans parts)
Click Here to order this kit now!
| $800 | We Modify your top end. |
| $875 | Exchange top end - Call for availability |
| $1275 | "Bolt On" - Includes Cylinder, head, and power valves (prices vary by year) |
| $100 | Optional Xtreme coated head and piston |
CR98 Big Bore Specifications: |
Fits 1986-2007 CR80 and CR85 |
| Bore: Yes | Stroke: No | Actual Displacement = 97.65cc |
| Engine Modifications Required: | |
| Cylinder: | Bore, Port and Replate with Apticote 2000 ceramic bore coating. |
| Power Valves: | N/A |
| Head: | Rechamber to work with the Big Bore piston. 100 octane suggested for most conditions. |
| Crankshaft: | No crank mods required. |
| Crankcase: | No crankcase mods required. |
| Blueprint: | Calculate deck height, squish clearance, trapped volume, port timing and compression ratio and list on your perminant Spec-Sheet. (Some operations with install only) |
Notes: This kit requires you to send us your cylinder, head, and powervalves for modification.
Notes: Core parts subject to inspection before credits will be issued.
Notes: This is an entry level engine package that has excellent power delivery for the supermini classes. It holds it's own against CR105's and CR112's.
Notes: It can be later stroked to 105cc with head mods.
Click Here to order this kit now!
| $1899 | Send us your engine and get a 105cc stroker kit installed. |
| $ | |
| $ |
|
| $100 | Optional Xtreme coated head and piston |
CR105 Specifications: |
Fits 1998-2007 CR80 and CR85 |
| Bore: Yes | Stroke: Yes | Actual Displacement = 105.00cc |
| Engine Modifications Required: | |
| Cylinder: | Bore, Port and Replate with Apticote 2000 ceramic bore coating. |
| Power Valves: | N/A |
| Head: | Rechamber to work with the stroker crank. 100 octane suggested for most conditions. |
| Crankshaft: | Stroked and balanced. |
| Crankcase: | Modified to clear stroker crank. |
| Blueprint: | Calculate deck height, squish clearance, trapped volume, port timing and compression ratio and list on your perminant Spec-Sheet. |
Notes: This kit requires you to send us your entire engine for modification, with kickstarter and shifter.
Notes: This is a national level engine package. The power delivery is designed to build confidence for young riders. It delivers torque and hook up that are un-paralleled in the industry that carrys to a screaming top end pull. This kit just makes all riders faster because it is smooth, easy to ride, and does not fall off the pipe like other engines out there.
Notes: Prices listed are to install stroker kit parts in good condition engine. Should your engine need rebuild parts there will be additional charges. We will call for approval before we install any parts that will have additional charges. (example: rod kit, mains, main seals, trans parts)