How to Choose the Right Dildo Size for Your Motorbunny: A Buyer's Guide

Quick Answer

For your Motorbunny, focus on the attachment system (Vac-U-Lock, The Grip, or direct TPE/silicone) and then choose a dildo length and girth that match your experience level and comfort. Start with a 6-8 inch insertable length and a circumference around 4.5-5 inches if you're new, and always ensure the base is compatible with your machine's attachment.

When you're ready to buy a dildo for your Motorbunny, size matters more than you might think. The right length and girth can make the difference between a mind-blowing ride and an uncomfortable one. This guide breaks down the key measurements and compatibility factors so you can choose with confidence.

We'll cover how to read dildo dimensions, what to consider based on your experience, and the importance of matching the base to your Motorbunny's attachment system. You'll also see a few real product examples to illustrate what works.

Understanding Dildo Dimensions: Length and Girth

Length is the total insertable portion of the dildo, measured from the base to the tip. For Motorbunny play, a longer dildo gives deeper penetration, but it also means more of it is moving with the machine's vibrations. If you're new, a shorter dildo (less than 7 inches) is easier to control and less likely to cause discomfort if you sink down too fast.

Girth (or circumference) is the measurement around the shaft at its widest point. A thicker dildo provides a fuller, more stretched sensation, but it requires more relaxation and preparation. Check the diameter as well—many manufacturers list both. A diameter of 1.5 inches is average, while 2 inches is on the larger side and not for beginners. The key is to match the dildo's girth to what feels comfortable for you, not just what looks impressive.

• Measure your existing comfortable toys: length and circumference to compare.
• Look for dildos with a flared base for safety—never use one without a compatible base on a machine.
• Remember that TPE and silicone have different flexibility; a thicker silicone toy will feel firmer than a soft TPE one.

Attachment System Compatibility: Vac-U-Lock, The Grip, and Direct Mounts

Your Motorbunny uses a specific attachment system, and the dildo must be compatible. The most common is the Vac-U-Lock system, which features a hole at the base of the dildo that fits onto a suction adapter. Many dildos, like the Merci The Perfect P-Spot Cock, come with a removable Vac-U-Lock suction cup, making them ready to mount.

If you prefer using Fleshlight or other strokers, The Grip attachment allows you to mount them securely. In that case, the 'dildo' is the stroker itself, and you'll choose based on the stroker's internal texture, not its external length or girth. For direct TPE attachments like the Standard TPE Attachment, the dimensions are fixed, and you simply choose based on your preferred size.

Always check the product description for whether it says 'Compatible with Motorbunny Original' or 'Sybian®'. Some attachments are cross-compatible, but not all. For example, the Standard TPE Attachment is not compatible with Motorbunny Buck. This step saves you from buying something that won't fit.

• Vac-U-Lock dildos have a 1-inch diameter hole at the base—ensure your Motorbunny has the adapter.
• The Grip mounts Fleshlight or similar strokers; the size you choose is about the stroker's internal texture.
• Direct TPE and silicone attachments slide onto the machine's attachment post; verify model compatibility.

Matching Size to Experience Level

If you're a beginner with Motorbunny, start with a dildo that has a circumference of 4.5 to 5 inches (about 1.4 to 1.6 inches in diameter) and an insertable length of 6 to 7 inches. This size allows you to enjoy the vibrations without overwhelming penetration. The Premium Silicone Clit Stim XL Attachment, with its 2-inch diameter, is better for experienced riders who like a fuller feel.

Intermediate riders can handle lengths up to 8 inches and girths around 5.5 inches. Advanced users often enjoy longer thrusting—up to 10 inches—but must be cautious with deep stimulation. The Merci P-Spot Cock is 9.5 inches long, so it's for those who want deep, targeted prostate contact. Always listen to your body: the machine doesn't know your limits, so you must.

• Beginner: 6-7 inches insertable, 4.5-5 inch circumference.
• Intermediate: 7-8 inches insertable, up to 5.5 inch circumference.
• Advanced: 8+ inches, but ensure you have experience with deep play.

Material and Firmness Affect Fit

The material affects how the dildo feels as the machine vibrates. Silicone is non-porous, easy to sterilize, and can be very firm or dual-density (soft outer layer with a firm core). The MB Real "Uncut" attachment uses dual-density silicone for a realistic feel with enough rigidity to transmit vibrations. However, it's 6.5 inches long, so it's not as deep as a longer Vac-U-Lock dildo.

TPE (thermoplastic elastomer) is softer and more pliable, like the Standard TPE Attachment, but it's porous, so it requires more careful cleaning and can't be fully sterilized. Firmness matters because a soft toy with a high-speed machine might not stay in place or deliver the targeted stimulation you want. For precise prostate stimulation, a firmer, curved dildo like the Merci P-Spot Cock is more effective.

• Silicone is the most hygienic and holds its shape well during intense vibration.
• TPE is softer but may need replacement sooner; follow care instructions.
• Dual-density silicone provides a realistic exterior with a firm inner core for better pressure.

Your Size Decision Cheat Sheet

• If you're new to machine play: Choose a dildo with an insertable length under 7 inches and a circumference around 4.5 inches. Look for a soft material like TPE to ease into the sensation. Start small and build up—comfort is key.
• If you want deep prostate stimulation: Look for a longer, firm dildo with a curve, like the Merci P-Spot Cock. Ensure it has a Vac-U-Lock base for secure mounting. Length and firmness matter; your g-spot may need direct pressure.
• If you prefer dual stimulation: Select an attachment with a shaft and a cradle for clitoral contact, like the Premium Silicone Clit Stim XL. Check the girth to ensure it's not too thick for you. Get more from your ride with a dual-action toy.

How These Products Fit Into Your Size Decision

• Merci The Perfect P-Spot Cock 9.5 in. Dildo with Removable Vac-U-Lock Suction Cup: A thick lifelike cock in solid black curves to stimulate the male g-spot, with a length of 9.5 inches and a removable Vac-U-Lock suction cup. This is for experienced riders who want deep, targeted prostate stimulation. The length and curve make it a specialty tool, not a first-toy.
• Standard TPE Attachment: A soft TPE attachment with a 3.7-inch length and 3.3-inch circumference, ride-on-top style, and cross-compatible with Sybian®, but not compatible with Motorbunny Buck. Ideal for beginners who prefer a shorter, less intense insertion. The small size is easier to control and perfect for learning how your body responds to machine vibrations.
• Premium Silicone Clit Stim XL Attachment: A premium, 100% silicone attachment with an 8.5-inch shaft and 4.82-inch circumference, angled for maximum g-spot contact and a front cradle for clitoral stimulation. This is a longer, thicker option that also provides dual stimulation. The silicone material is easy to sterilize, making it a durable choice for those who want a fuller feel.
• The Grip for Motorbunny Original - Fits Fleshlight Strokers: Designed to firmly support any standard Fleshlight Stroker, with a pull-tab locking lever for easy one-step mounting. If you prefer to use a stroker instead of a dildo, this attachment lets you choose the stroker's internal size and texture, giving you more variety without buying new dildos.

Fit Guidance: What Works for Whom

Best for

• Beginners and those with lower girth tolerance should choose shorter, thinner dildos.
• Experienced users seeking deep stimulation benefit from longer Vac-U-Lock dildos.

Not for

• If you're new to machine play, avoid high-girth dildos like the 4.82-inch circumference of the XL Clit Stim attachment.
• If you have a Motorbunny Buck, avoid TPE attachments that are not compatible.

Choosing the right dildo size for your Motorbunny is about matching dimensions to your experience and comfort. Start with the attachment system, then prioritize length and girth that feel good, and always consider material firmness. With the right fit, you'll enjoy a ride that's both safe and satisfying.