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From $1,200.00
Speed Kit, 420 Predator or OHV & 13/15hp Clone, Stage 4—
$1,200.00
The Story
Speed Kit Selection Guide
This kit is similar to our Stage 3, but adds a ported and milled head with stainless valves, a stud kit, and heavy duty valve train components. Allows up to 35+ HP out of a 420 engine.
This kit is for OHV engines and will not fit Hemis.
Kit Includes:
- Fully Ported and Milled Race Head (Genuine Honda Core)
- High-Torque Genuine Honda Core (The Best!!)
- High-Flow 36mm / 31mm Valves with Lash Caps
- Dual Springs with Titanium Retainers
- 307 Race Cam
- Black Venom Aluminum Roller Rockers
- Valve Cover Spacer
- Chrome Moly Pushrods
- Choice of Carbs (Or use your own)
- 90mm Forged Flat-Top Piston with Rings
- Billet Rod (+.040" Longer)
- Offset Timing Key
- Carb, Insulator, Head, and Case Gaskets
- ARP Bolt Kit
*Note: This kit only fits 414 & 420cc (90mm) non-hemi engines. Filter should be sprayed with K&N type oil, especially in dirt applications. Oil not included. Billet aluminum flywheel REQUIRED. These kits are intended for experienced engine builders. Some clearance, fitment, or other engine building "tricks" may be needed. Picture for reference only. See above description for actual content.
Due to the head work required for this kit, please allow 1 week to ship.
Description
Speed Kit Selection Guide
This kit is similar to our Stage 3, but adds a ported and milled head with stainless valves, a stud kit, and heavy duty valve train components. Allows up to 35+ HP out of a 420 engine.
This kit is for OHV engines and will not fit Hemis.
Kit Includes:
- Fully Ported and Milled Race Head (Genuine Honda Core)
- High-Torque Genuine Honda Core (The Best!!)
- High-Flow 36mm / 31mm Valves with Lash Caps
- Dual Springs with Titanium Retainers
- 307 Race Cam
- Black Venom Aluminum Roller Rockers
- Valve Cover Spacer
- Chrome Moly Pushrods
- Choice of Carbs (Or use your own)
- 90mm Forged Flat-Top Piston with Rings
- Billet Rod (+.040" Longer)
- Offset Timing Key
- Carb, Insulator, Head, and Case Gaskets
- ARP Bolt Kit
*Note: This kit only fits 414 & 420cc (90mm) non-hemi engines. Filter should be sprayed with K&N type oil, especially in dirt applications. Oil not included. Billet aluminum flywheel REQUIRED. These kits are intended for experienced engine builders. Some clearance, fitment, or other engine building "tricks" may be needed. Picture for reference only. See above description for actual content.
Due to the head work required for this kit, please allow 1 week to ship.
