Choosing reliable engine mounts is essential for pit bikes, especially across 50cc to 140cc engines. The right mounts ensure proper alignment, minimize vibration, and help maintain engine performance during off-road use. The following five Amazon options deliver robust M8 mounting bolts designed for pit bikes, with lengths around 105mm to 115mm and included hardware for straightforward setup. Each pick is evaluated for broad compatibility, installation ease, and build quality to support everyday riding and maintenance tasks.
Summary of selected products
| Brand | Product | Bolt Size | Length | Includes | Fitment |
|---|---|---|---|---|---|
| PRO BAT | Engine Mount Bolts (2-Pack) | 8mm | 115mm total 122mm | 2 bolts, 2 nuts, 1 wrench | 50cc–125cc pit bikes, Pit Pro ATV Dirt Quad |
| YD-PS001 | 8mm Engine Mount Kit | 8mm | 115mm | Bolts (details not specified) | Fits 50cc–250cc pit dirt bikes |
| PRO BAT | Pit Bike Top & Bottom Engine Mount Bolts | 8mm | 115mm (122mm total) | 1 bolt, 1 wrench | 50cc–125cc pit bikes, ATV Dirt Quad |
| DJ-Motor | Engine Mount Bolts Set | 8mm | 105mm & 110mm | Not specified | Pit Dirt Bike Motors |
| TC-Motor | Engine Mount Bolt Set | 8mm | 105mm & 110mm | Not specified | Pit Dirt Bike Motors |
PRO BAT Engine Mount Bolts (2-Pack)
This set provides a straightforward solution for replacing worn or missing pit-bike engine mounting bolts with a reliable, match-ready option. The product specifies 8mm mounting bolts suitable for almost every pit bike engine from 50cc to 125cc, aligning with common mounting points on Pit Pro ATV Dirt Quad Bikes. The kit includes two bolts, two nuts, and a wrench, which supports a quick, tool-in-hand installation. The bolt length is 115mm, with a total length of 122mm, ensuring a solid bite in both the engine mount and frame.
- Bolt size: 8mm
- Length: 115mm (122mm total)
- Includes: 2 bolts, 2 nuts, 1 wrench
- Applications: 50cc–125cc pit bikes and related ATV/dirt quad models
YD-PS001 8mm Engine Mount Kit
The YD-PS001 kit centers on a practical 8mm engine mount bolt with a length of 115mm and a pitch of 1.25mm. The specification notes that it fits almost every pit dirt bike engine from 50cc to 250cc, giving riders broad compatibility for various models. The listing emphasizes the exact bolt length and measurement approach, which helps ensure a precise fit when upgrading or repairing mounts on older or mixed-brand builds. This option is well-suited for riders who prefer standard M8 hardware with consistent sizing across multiple projects.
- Bolt size: M8 (8mm)
- Length: 115mm; measured from under the head to the end of the thread
- Pitch: 1.25mm
- Fitment: Pit dirt bikes from 50cc–250cc
PRO BAT 8mm Pit Bike Top & Bottom Engine Mount Bolts
This listing provides a compact top-and-bottom mounting bolt solution for pit bikes, designed around 8mm diameter bolts with a 115mm length and a total of 122mm. The kit includes a single bolt and a wrench, making it a convenient option for quick replacements on a single side or for a rider who wants to carry an extra mount hardware on trips. The product targets a broad range of engines from 50cc to 125cc used in Pit Pro ATV Dirt Quad builds, ensuring solid compatibility with common pit bike configurations.
- Bolt size: 8mm
- Length: 115mm (122mm total)
- Includes: 1 bolt, 1 wrench
- Fitment: 50cc–125cc pit bikes and related ATV/dirt quad models
DJ-Motor M8x105mm M8x110mm Engine Mount Bolts
DJ-Motor offers a practical flange bolts set with two sizes: M8x105mm and M8x110mm. This pair provides options for riders who need slightly different bolt lengths to align with varied pit bike frame geometries and engine mounting points. The listing notes the color (Silver) and the sizing, making it a straightforward option for hobbyists performing routine maintenance on pit dirt bikes. While the exact included components aren’t specified, the dual-length approach supports versatile mounting across common pit bike engines.
- Sizes: M8x105mm and M8x110mm
- Format: Flange bolts set
- Compatibility: Pit dirt bike motors
TC-Motor Engine Mount Bolt Set
TC-Motor supplies a dedicated engine mount bolt set for pit dirt bikes and motorcycles, featuring 105mm and 110mm options to accommodate a range of mounting depths. The listing advises customers to read the description carefully to confirm compatibility and invites contact with the seller for questions. This option is suitable for riders tuning their ride with precise mount depths, ensuring that the engine sits correctly without tight clearance or misalignment. It is a dependable choice for on-the-gly maintenance and rebuilds where exact bolt lengths matter.
- Lengths: 105mm and 110mm
- General fitment: Pit dirt bike motors
- Note: Compatibility guidance is recommended before purchase
Buying Guide
When choosing pit bike engine mounts, several factors determine long-term reliability and ease of installation. Understanding bolt size and length helps ensure correct fitment across commonly used engines from 50cc up to 140cc. Compatibility with existing mounting points is essential to avoid misalignment and excess vibration. Hardware included with a kit matters; some sets come with nuts and a wrench, while others are sold as bolts only, which can influence your preparation and tool needs.
Key considerations include the bolt diameter (M8 is standard in these options), length (105mm vs 115mm), and the engine’s mounting geometry. A kit that covers top and bottom mounts can simplify installation and reduce the risk of loose mounts under load. For riders who switch between models or brands, cross-compatibility and standardization across bolt patterns can save time and ensure consistent performance during off-road use.
Durability and material quality are also important. While these listings emphasize standard M8 bolts, checking the corrosion resistance and any coating helps extend service life in muddy or wet riding conditions. Some sets include extra hardware like nuts and a wrench, which supports field maintenance. For riders performing frequent maintenance, consider having a few lengths on hand (105mm and 115mm) to accommodate variations in frame spacing and engine depth.
At-a-glance comparison
| Product | Bolt Size | Common Lengths | Includes | Best For |
|---|---|---|---|---|
| PRO BAT Engine Mount Bolts (2-Pack) | 8mm | 115mm | 2 bolts, 2 nuts, 1 wrench | Quick replacements, ready-to-install |
| YD-PS001 8mm Engine Mount Kit | 8mm | 115mm | Bolts (unspecified) | Broad compatibility across models |
| PRO BAT Pit Bike Top & Bottom Bolts | 8mm | 115mm (122mm) | 1 bolt, 1 wrench | Top-and-bottom mounting needs |
| DJ-Motor Bolts Set | 8mm | 105mm & 110mm | Not specified | Multiple mounting depths |
| TC-Motor Engine Mount Set | 8mm | 105mm & 110mm | Not specified | Precisely spaced engine mounts |
In summary, these five picks cover common bolt sizes and lengths used by pit bikes, with options that simplify installation and maintenance. When selecting, prioritize sets that match your engine’s displacement, the mounting depth, and whether you prefer a top-and-bottom kit or individual bolts. If you ride a mix of models, a kit with both 105mm and 115mm options will provide greater flexibility. Always verify the listed fitment against your bike’s specifications to ensure a secure, vibration-free ride.