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Tennessee Thunderstix - Reaper Jr .268 Performance Camshaft (224 Core)
Tennessee Thunderstix - Reaper .268 Performance Camshaft
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Tennessee Thunderstix - Reaper Jr .268 Performance Camshaft (224 Core)

Part Number: TTS-680JR
Online Price: $68.99
Phone Order Price:$74.99
You Save:$6.00(8%)
Reaper Jr .268 Camshaft for Small Block Honda-Clones | Tennesseee Thunderstix
Availability: In Stock.

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Description

Tennessee Thunderstix Reaper Jr .268 Performance Camshaft - Broad Powerband Cam for Honda Clone Kart & Mini Bike Racing Engines


Unleash Power. Summon Performance.

Named after the world’s hottest pepper and the personification of death itself, the Reaper Jr .268 Performance Camshaft is engineered to dominate small block Honda-clone kart racing and mini bike performance builds.


Unlike traditional .265–.268 lift cams that sacrifice drivability for peak numbers, the Reaper Jr is specifically designed to increase low-end torque and throttle response while still delivering strong mid-range and top-end power.


Built for Real-World Racing Performance

The Reaper Jr was developed to solve a common problem in performance builds—loss of low-speed power when running:

  • Larger carburetors
  • Bigger intake ports
  • Oversized valves

This camshaft restores and enhances low-RPM performance, creating one of the broadest and most usable powerbandsavailable in a Honda clone camshaft.

  • Primary Powerband: 4000–6500 RPM
  • Secondary Range: 3500–7500 RPM
  • Peak Torque: 4500–5200 RPM
  • Peak Horsepower: 6500–7200 RPM

The result is stronger acceleration off the corner, improved throttle response, and consistent pull through the entire RPM range—ideal for kart racing and mini bike applications.


Sleeper Performance Without the Complexity

The Reaper Jr is a non-welded “sleeper” camshaft, offering serious performance without requiring expensive or exotic engine components.

  • Works with stock-style valvetrain components
  • Includes 26 lb valve springs
  • Designed for affordability, durability, and reliability

This makes it one of the best choices for racers looking to upgrade performance without overcomplicating their build.


Optimized Engine Combinations

Best suited for:

  • 196cc+ Honda clone engines
  • Moderate compression builds (10:1–10.7:1)

Compression Guidelines:

  • Up to 10.75:1: safe on pump gas
  • Above 10.75:1: race gas or methanol recommended

For larger displacement or higher compression engines, consider:

  • Reaper .268 (standard version)
  • Banzai II camshaft


Camshaft Specifications

  • Lift: .268 Intake / .268 Exhaust
  • Duration @ .050: 229° Intake / 229° Exhaust
  • Centerlines: 112° Intake / 106° Exhaust
  • Valve Lash: .003–.006 (hot recommended)
  • Includes: 26 lb valve springs


Engine Compatibility

Compatible Engines (.548 Journal):

  • Predator 212 Hemi
  • Predator 224 Non-Hemi
  • Tillotson 196R, 212E, 212R, 225–268R
  • Wildcat 223, 240RS
  • Ducar 196, 212, 224
  • Honda GX200 / 196cc Clones

Not Compatible:

  • Predator 212 Non-Hemi


Clutch & Torque Converter Setup

  • Minimum Engagement: 2800 RPM
  • Recommended Engagement: 3600–5000 RPM
  • Max Recommended RPM: 7500 RPM

The lower engagement capability makes the Reaper Jr ideal for tracks or setups requiring strong low-speed driveability and smoother power delivery.


Recommended Performance Build

  • Engine: Tillotson 236R/RX, 240RX, or Wildcat 240
  • Cylinder Head: WC946-3 31/25mm CNC Ported
  • Carburetor: 24–26mm (95–110 CFM), PWK24-1K
  • Ignition: SK300 flywheel with PVL 12K ignition
  • Exhaust: .960–.990 ID (open preferred)


Why Choose the Reaper Jr .268 Camshaft?

  • Improves low-end torque and throttle response
  • Maintains strong mid-range and top-end power
  • Ideal for kart racing and mini bike performance builds
  • Works with larger carburetors and ported heads
  • Broad, usable powerband for real racing conditions
  • Affordable non-welded design


Learn More

For a full breakdown of 268-series camshafts:
https://www.eccarburetors.com/kart-racing-camshaft-honda-clone-reaper-banzai

FAQ

What makes the Reaper Jr .268 camshaft different from other .268 cams?

The Reaper Jr is specifically designed to improve low-end torque and throttle response, unlike many .268 cams that focus only on top-end power. It delivers a broader, more usable powerband, especially for engines with larger carbs, ported heads, or bigger valves.


What engines work best with the Reaper Jr camshaft?

The Reaper Jr is ideal for:

  • 196cc and larger Honda clone engines
  • Predator 212 Hemi and 224 Non-Hemi
  • Tillotson, Ducar, Wildcat, and GX200 platforms

It is best suited for moderate performance builds, not extreme high-compression race engines.


What RPM range does the Reaper Jr perform best in?

  • Primary powerband: 4000–6500 RPM
  • Peak torque: 4500–5200 RPM
  • Peak horsepower: 6500–7200 RPM

This makes it ideal for kart tracks and mini bike setups that require strong acceleration and consistent power delivery.


Is the Reaper Jr good for low-speed performance?

Yes. One of the main advantages of the Reaper Jr is its ability to restore and improve low-speed power, especially in engines with large carburetors or ported cylinder heads that typically reduce throttle response.


Do I need upgraded valve springs or valvetrain components?

No. The Reaper Jr is designed to work with:

  • 26 lb valve springs (included)
  • Stock-style valvetrain components

This keeps the build simple, reliable, and cost-effective.


What compression ratio works best with this camshaft?

  • Optimal: 10:1–10.7:1
  • Safe up to: 10.75:1 on pump gas
  • Higher compression may require race fuel or methanol


What clutch engagement RPM should I use?

  • Minimum: 2800 RPM
  • Recommended: 3600–5000 RPM

The Reaper Jr works well with lower engagement setups, making it great for tight tracks and technical riding.


Will this camshaft work with a big carburetor and ported head?

Yes. The Reaper Jr is specifically designed to compensate for low-end power loss caused by:

  • Larger carburetors
  • Ported heads
  • Bigger valves

It helps maintain strong throttle response and acceleration.


Is this camshaft good for racing or street use?

It is ideal for:

  • Kart racing applications
  • Mini bike performance builds

It can also work well for aggressive street setups that require strong mid-range and low-end power.


When should I choose the Reaper Jr over the standard Reaper cam?

Choose the Reaper Jr if:

  • Your engine is smaller (196cc–224cc)
  • You want better low-end and mid-range power
  • Your compression is under ~10.75:1

Choose the standard Reaper if you need maximum top-end power in larger, high-compression engines.

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