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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →The 2008 Buell Lightning Long XB12Ss is identified in Buell’s owner’s manual by VIN type code JX and model code 6. For service information, Harley-Davidson lists the 2008 XB Models Service Manual (99490-08Y) and the Lightning Models Parts Catalog (99571-08Y). Retailers list 120/70-17 front and 180/55-17 rear tires for the XB12Ss, but confirm those sizes against your motorcycle and its documentation before buying.
How to identify a 2008 XB12Ss
Buell’s 2008 owner’s manual decodes VIN type code JX as Lightning Long and model code 6 as XB12Ss. The manual identifies engine type code 03 as 1203 cc. These are VIN decoding details, not a substitute for checking the complete motorcycle identification.
For parts orders or questions, the manual says to provide the full VIN. It contains market configuration and other identifiers that can help distinguish the exact motorcycle. See Buell’s 2008 XB Models owner’s manual.
Factory service manuals and parts catalog
Harley-Davidson’s service-information listing identifies these 2008 Buell publications:
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- Charger, Maintainer & Desulfator - An all-weather battery charger, battery maintainer, trickle charger, and battery desulfator. Perfect for charging and maintaining all 12-volt lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell).
- Automatic Desulfation & Optimization - Automatic detection of battery sulfation problem. Applying with pulse current technology to desulfate the batteries effectively. Optimize the battery performance during charging without any manual operation.
- Energy Saving & Spark Free - Zero output in standby mode. No battery drain when connecting with the battery. Spark proof during lead connection for safety.
- Multi-level Safety Protection & Timer Set Up - Overcharge, short circuit and reverse polarity protected. Charge the battery up to 14.4V and Maintain the battery at 13.6V for long time to avoid gasing and to extend the battery life. 24-hour Timer is set up in the program to terminate the charge and enter the maintaining mode once the voltage is above 14V to ensure safety.
- Easy Operation -Just plug-in, connect to the battery and start charging or maintaining your battery. The desulfation is working automatically during the charing. No manual operation.
- 2008 Buell XB Models Service Manual: part number 99490-08Y.
- 2008 Buell Lightning Models Parts Catalog: part number 99571-08Y.
The owner’s manual also lists the 2008 XB Electronic Diagnostics Manual, part number 99493-08Y. Harley-Davidson’s 2008 Buell Lightning Models service-literature listing is a reference for the publication names and numbers. The owner’s manual describes factory authorized manuals as “the most complete and detailed source of information outside of your Buell dealer.”
When searching for a copy, use the exact phrase “2008 Buell XB Models Service Manual 99490-08Y” and verify the publication number and model coverage in the listing. The part number identifies the manual; it does not establish that a particular seller has stock or that a listing is an official source.
Rank #2
- Automatic Battery Charger & Maintainer: 1A 12V smart battery charger perfect for SLA / VRLA / GEL CELL / AGM / WET lead acid batteries. It is a battery maintainer, trickle charger, float charger, and battery desulfator, also complete 4-step charging program (Initialization, Bulk Charge, Absorption Mode, Float Mode).
- Ultra Compact & Practical: The battery charger is compact and lightweight like the phone, long enough ac cable+ dc cable 102inch long, two types of dc output cable with either the ring or alligator connectors to use. 3.9 x 2.4 x 1.25inchs, 10.5oz.
- Widely Compatible: Perfect suitable for cars, golf cars, motorcycles, scooters, lawn mowers, ATVs, UTVs, tractors, trucks, SUVs, RVs, boats, PWCs, jet skis, snowmobiles, classic cars, children's toys and more. automatically switches to float, maintenance voltage after fully charging the battery.
- Intuitive led indicators provide visual state-of-charge feedback and diagnostic information, green is power light; green with red means charging; green with yellow means fully charged.
- Multi Safety Protections: Safely charged avoid overcharge in hot climates and under-charging in cold climates. Built in circuit protection guards against reverse polarity, over-current, overload protection, over-voltage and more protection. Adopt ABS flame-retardant shell, fireproof, electric shock. Our safe and advanced charging technology automatically
XB12Ss tire sizes: retailer listings and verification
RevZilla and Dennis Kirk list the following sizes for a 2008 XB12Ss Lightning:
| Position | Retailer-listed size | Listing |
|---|---|---|
| Front | 120/70-17 | RevZilla XB12Ss fitment |
| Rear | 180/55-17 | Dennis Kirk XB12Ss fitment |
These are retailer fitment listings, not independent confirmation from the XB12Ss tire table in the available manual excerpt: that excerpt’s table is labeled for the Ulysses XB12X. Check the owner’s manual for your motorcycle, inspect the tires and wheels actually fitted, and confirm the replacement tire’s suitability for the wheel and exact model before purchase. Do not use Ulysses specifications as XB12Ss specifications.
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Rank #3
- Stay Charged: Battery Tender battery chargers and maintainers provide a full charge to your powersport vehicle’s battery before switching to float mode to maintain proper voltage levels for safe, long-term storage
- Extend Battery Life: Compatible with all 12V lead-acid, flooded, AGM, and gel cell batteries. Complete 4-step charging program (Initialization, Bulk Charge, Absorption Mode, Float Mode) allows for optimization of battery power, without overcharging or battery damage. Smarter than a trickle charger.
- Includes: 12V, 750mA battery charger and battery maintainer with 12-foot output cord, fused-ring terminal harness for hard-to-reach batteries and alligator clip accessory cables, 5-year warranty, and lifetime customer support
- Simple & Safe: Low maintenance, easy-to-use, universal battery charger is just 3.3 x 1.3 x 2.4 inches, 1 lb (charger only). Spark-proof circuitry ensures no-spark connections, and automatic reversed hook-up detection verifies correct connection
- Monitor Power Levels: Two-color charge status LED light indicates the state of the charge and if the battery voltage drops too far under load, adaptive charging will resume full charger output power. Automatic charge cycle functionality switches to float mode after fully charging the battery
Accessory and parts checks before purchase
Buell’s owner’s manual warns that accessories can change how the motorcycle behaves. It specifically notes that changes to riding position can increase reaction time and adversely affect handling; additional electrical equipment can overload the electrical system; and large surfaces such as windshields or luggage racks can affect handling. The manual recommends accessories designed for the motorcycle and proper installation.
- Match the part to the 2008 model and confirm coverage with the full VIN.
- For tires and other fitment-sensitive components, verify dimensions and compatibility with the installed wheel and motorcycle documentation.
- For accessories, consider their effects on riding position, handling, and electrical load, as well as whether they are designed for this motorcycle.
Specifications and variant limits
The owner’s manual material available for this model identifies the XB12Ss model code and engine-type decoding noted above, but its retrieved specification tables are explicitly for 2008 Ulysses models. Ulysses seat height, weight, geometry, fuel-tank capacity, tire pressures, and other variant-specific figures should not be presented as XB12Ss specifications. No XB12Ss-specific power or torque figure is established by the cited material.
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